高考英语3500词汇(R) 单词+词组+句型

rabbit [ˈræbɪt] n. 兔, 家兔 race [reɪs] n. 种族, 民族 v. (速率)比赛, 角逐 n. 竞走, 比…

rabbit [ˈræbɪt] n. 兔, 家兔

race [reɪs] n. 种族, 民族 v. (速率)比赛, 角逐 n. 竞走, 比赛

racial [ˈreɪʃ(ə)l] a. 种族的

radiation [reɪdɪˈeɪʃ(ə)n] n. 放射, 放射物

radio [reɪdɪəʊ] n. 无线电, 收音机

radioactive [reɪdɪəʊˈæktɪv] a. 放射性的

radium [ˈreɪdɪəm] n. 镭

rag [ræɡ] n. 破布, 抹布

rail [reɪl] n. 铁路

railway [ˈreɪlweɪ] n. 铁路;铁道

rain [reɪn] n. 雨, 雨水 vi. 下雨

rainbow [ˈreɪnbəʊ] n. 虹, 彩虹

raincoat [ˈreɪnkəʊt] n. 雨衣

rainfall [ˈreɪnfɔːl] n. 一场雨; 降雨量

rainy [ˈreɪnɪ] a. 下雨的;多雨的

raise [reɪz] vt. 使升高; 豢养

raise one’s hand/voice 举起手、抬大声音

raise money 筹集钱

I was raised by my aunt on the farm.我在农场被我的姑姑扶养。

random [ˈrændəm] a.随便,未经事前斟酌的

range [reɪndʒ] n./ v. 变革, 变更, 排序

We offer a full range of activities for children.咱们为孩子们供给全方位的勾当。

It’s difficult to find a house in our price range.很难找到一地点咱们代价范畴内的屋子。

She has had a number of different jobs, ranging from cook to teacher.她有过很多分歧的事情,从厨师到教员。

rank [ræŋk] n. 职衔, 军衔

top-ranked players 一流的选手

He was ranked second in his age group. 他在他的春秋段排名第二。

At the height of her career, she ranked second in the world. 在她奇迹的颠峰时代,她排名世界第二。

She was not used to mixing with people of high social rank. 她不习气和社会职位地方很高的人搅合在一块儿。

officers of junior/senior rank 有初级/高档军衔的军官

a painter of the first rank 一流的画家

rapid [ˈræpɪd] a. 快的, 敏捷的

rare [reə(r)] a. 罕有的, 希有的

rat [ræt] n. 老鼠

rate [reɪt] n./ v. 率, 评估, 评价

rather [ˈrɑːðə; (US) ˈræðər] ad. 至关, 宁肯

raw [rɔː] a.生的,未煮过的,未加工的

raw material [rɔː məˈtɪərɪəl] 原料

ray [reɪ] n. 灿烂, 光芒

razor [ˈreɪzə(r)] n. 剃须刀

reach [riːtʃ] v. 达到, 伸手(脚)够到

beyond (out of ) reach 够不着

within one’s reach 够得着

reach (one’s hand) for 伸手够……

reach a conclusion 得出结论

react [riːˈækt] v. 回应, 过敏, 起物理, 化学反响

read (read, read) [riːd] v. 读;朗诵

The sign on the wall reads “No Smoking”.墙上的标牌上写着“制止抽烟”。

I can’t read his mind/eyes. 我不克不及读懂他的设法/眼神。

The themometer reads 30 degrees. 温度计读数为30度。

reading [ʃɜːt] n. 浏览;朗诵

ready [ˈredɪ] a. 筹备好的

real [riːl] a. 真正的, 确切的

reality [rɪˈælɪtɪ] n. 实际

realise (美realize) [ˈrɪəlaɪz] vt.熟悉到,实现

realise one’s dream 实现或人的空想

really v [ˈrɪəlɪ] ad. 真正地;到底;确切

reason [ˈriːz(ə)n] vi.评理,奉劝n.来由,缘由

reason sb into/out of doing 说服或人做(不做)…

reason with sb和或人理论

the reason for sth ……的来由

The reason why… is that… ……的缘由是……

reasonable [ˈriːzənəb(ə)l] a. 合乎情理的

rebuild [riːˈbɪld] vt. 重修

receipt [rɪˈsiːt] n. 收条

receive [rɪˈsiːv] v. 收到, 获得

receive a letter 收到一封信

receive a good education/a warm welcome 遭到杰出的教诲/强烈热闹的接待

The play was well received. 这部戏剧遭到好评。

receiver [rɪˈsiːvə(r)] n. 德律风听筒

recent [ˈriːsənt] a. 迩来的, 近来的

reception [rɪˈsepʃ(ə)n] n. 欢迎

receptionist [rɪˈsepʃənɪst] n. 欢迎员

recipe [ˈresɪpɪ] n. 烹调法, 食谱

recite [rɪˈsaɪt] v. 背诵

recognise (美recognize) [ˈrekəɡnaɪz] vt.认出

recognize sb./one’s voice

recognize sb/sth as (to be) 认可……是……

reco妹妹end [rekəˈmend] v. 举荐

reco妹妹end somebody/something 举荐或人/某物

Can you reco妹妹end a good hotel? 你能给我举荐一家宾馆吗?

reco妹妹end (that)… 建议……

I reco妹妹end (that) he(should)see a lawyer. 我建议他去见一个状师。

reco妹妹end somebody to do something 建议或人做某事 reco妹妹end (somebody) doing something 建议(或人)做某事

He reco妹妹ended reading the book before seeing the movie. 他建议在看这部片子以前读这本书。

It is reco妹妹ended that… 举荐……

It is strongly reco妹妹ended that the machines should be checked every year.强烈举荐这些呆板每一年被查抄一次。

record [ˈrekɔːd; (US) ˈrekərd] n. 记实;唱片

record holder [ˈrekɔːd ˈhəʊldə(r)] 记实连结者

record [ˈrekɔːd; (US) ˈrekərd] v. 录制, 记实

recorder [rɪˈkɔːdə(r)] n. 灌音机

recover [rɪˈkʌvə(r)] vi. 康复;规复

recover his lost bike 找回他丢的自行车

recover one’s health 规复康健

recover from one’s illness 疾病康复

recreation [rekrɪˈeɪʃ(ə)n] n. 文娱, 消遣

recycle [riːˈsaɪk(ə)l] vt. 收受接管;再轮回

rectangle [ˈrektæŋɡ(ə)l] n. & a.长方形,长方形的

red [red] n. 赤色 a.赤色的

redirect [riːdaɪˈrekt] vt. 使扭转, 使转移

reduce [rɪˈdjuːs; (US) -ˈduːs] vt. 削减, 缩减

reduce the price by 10 percent.代价低落了百分之十

Hunger reduced him to stealing.饥饿使他起头偷工具。

refer [rɪˈfɜː(r)] vi. 谈到,提到,触及,有关

refer to 说起;参考,查阅;触及

refer to a dictionary 查字典

The man referred to is a famous writer. 被提到的这个汉子是一个闻名的作家。

referee [refəˈriː] n. 裁判, 仲裁, 调处员

reference [ˈref(ə)rəns] n.提到,触及,谈及,盘问

reflect [rɪˈflekt] v. 反应, 反射

She could see herself reflected in his eyes. 她可以看到她本身映在他的眼睛里。

His music reflects his interest in African culture.他的音乐反响了他对非洲文化的乐趣。

reflect on/upon something 当真思虑,反思

She was left to reflect on the implications of her decision.她被使得思虑所做决议的影响。

On the way home he reflected that the interview had gone well. 在回家的路上,他想口试举行的很好。

reform [rɪˈfɔːm] v./ n. 鼎新, 改良, 改进

refresh [rɪˈfreʃ] v. 使规复精神, 提示

refreshments [rɪˈfreʃmənt] n. 点心, 便餐;(集会后的)简略茶点款待

refrigerator [rɪˈfrɪdʒəreɪtə(r)] n. 冰箱

refusal [rɪˈfjuːz(ə)l] n. 回绝

refuse sth/to do sth.

refuse [rɪˈfjuːz] vi. 回绝, 不肯

regard [rɪˈɡɑːd] v. 把……看做

regard sb/sth as n/adj. 认为或人/某物……

Please give my best regards to your family. 代我向你家人问好

regards [rɪˈɡɑːd] n. 问候, 请安

regardless [rɪˈɡɑːdlɪs] a. 掉臂, 不加理睬

regardless of 无论/掉臂……

register [ˈredʒɪstə(r)] n. 挂号簿, 混名册, 注册员 v. 挂号, 注册

regret [rɪˈɡret] n./ vt.惋惜,遗憾;怜惜;悼念

regret doing sth. 懊悔做过某事(已做)

regret to do sth. 遗憾要做某事(未做)

to one’s regret 让或人懊悔/遗憾的是……

regular [ˈreɡjʊlə(r)] a. 法则的, 常常

regularly adv.

a regular meeting 按期的集会

He visited me regularly. 他按期来看我。

regulation [reɡjʊˈleɪʃ(ə)n] n. 法则, 规章

reject [rɪˈdʒekt] v. 回绝

reject something 回绝……

reject somebody 不任命/回绝采取或人

I've been rejected by all the universities I applied to.我被所有我申请的黉舍回绝了。

relate [rɪˈleɪt] vi. 有关; 触及

relate A to B 使A和B相干/把A和B接洽起来

In the future, pay increases will be related to productivity. 将来,涨工资将会和出产率接洽起来。

relate to something/somebody 触及到某物/或人

The second paragraph relates to the situation in Scotland.第二段触及到了苏格兰的环境。

relation [rɪˈleɪʃ(ə)n] n. 瓜葛; 支属

relationship [rɪˈleɪʃənʃɪp] n. 瓜葛

relative [ˈrelətɪv] n. 支属, 亲戚

relative adj.有关的;相对于的 n.亲戚,相干物,瓜葛词

the relation between cause and effect 因果瓜葛

A be relative to B A与 B 有关

relax [rɪˈlæks] v. (使)放松, 轻松

You have been working too hard,and you need to relax yourself.你事情太尽力了,你必要苏息。

I’ll relax when I know you are safe. 当我晓得你是平安使,我才会放松。

relay [ˈriːleɪ] n. 接力, 代替人, 中转 v. 代替, 弥补;转运

relevant a. 慎密相干,成心义的

reliable [rɪˈlaɪəb(ə)l] a. 可托赖的, 可寄托的

a reliable friend 一个靠得住的朋侪

Our information comes from a reliable source. 咱们的动静来历靠得住。

We are looking for someone who is reliable and hard-working. 咱们正在寻觅一个靠得住的和事情尽力的人。

relief [rɪˈliːf] n. 轻松,摆脱,和缓,接济

a sense of relief 一种摆脱感

breathe a sigh of relief 如释重负松了口吻

much to one’s relief 令或人很是欣慰的是

the relief of suffering 痛楚的解除

provide relief for refugees 接济灾黎

religion [rɪˈlɪdʒən] n. 宗教

religious [rɪˈlɪdʒəs] a. 宗教的

rely [rɪˈlaɪ] v. 依靠, 寄托

rely on 寄托/依靠/相信……

These days we rely heavily on computers to organize our work. 这些天,咱们在很大水平上依靠电脑来放置咱们的事情。

You can rely on me to keep your secret. 你可以相信我为你守旧机密。

rely on it that… 相信……

remain [rɪˈmeɪn] vt.余下,留下vi.连结,还是

Much food remained. 不少食品剩下了。

Much remains to be done. 另有很多事要做。

It remains to be seen whether he will win the game. 他是不是会博得角逐还尚待分晓。

He remains a doctor/ young/ standing there. 他依然是一个大夫/年青/站在那边。

The work remains undone. 事情还没完成。

remaining adj. 残剩的

the remaining time 残剩的时候

remark [rɪˈmɑːk] n. 报告;话;群情

remember [rɪˈmembə(r)] v. 记得, 想起

remember to do sth. 记得去做某事(未做)

remember doing sth. 记得做过某事(已做)

Please remember me to your mother.代我向你母亲问好。

remind [rɪˈmaɪnd] vt. 提示, 使记起

remote [rɪˈməʊt] a. 偏僻的, 冷僻的

remove [rɪˈmuːv] vt. 挪动, 拿走, 脱掉(衣服等)

He removed his hand from her shoulder. 他把他的手从她的肩膀拿开。

remove one’s eyes from the picture 把眼光从画上移开

remove the family to 把家搬到……

remove one’s shoes/coat 脱下鞋/外衣

remove the dirt from the door 断根/去掉墙上的尘土

remove one’s doubt 撤销或人的疑虑

remove a student from school 将一个学生解雇出黉舍

rent [rent] n.& v. 房钱

The house rents at/for 5 dollars a week. 这所屋子以一周5美元的代价出租。

repair [rɪˈpeə(r)] n.& vt. 补缀;修补

under repair 正在补缀中

repairs [rɪˈpeə(r)] n. 补缀事情

repeat [rɪˈpiːt]vt. 重说, 重做

replace [rɪˈpleɪs] vt. 代替

reply [rɪˈplaɪ] n. 答复, 回答

report [rɪˈpɔːt] n.& v. 报导, 陈述

What you reported differs from the facts. 你报告请示的和究竟分歧。

It is reported that a young girl was robbed yesterday.=A girl is reported to have been robbed yesterday. 据报导,一个年青女孩昨天被掳掠了。

reporter [rɪˈpɔːtə(r)] n. 记者, 消息通信员

represent [reprɪˈzent] vt. 代表

The association was formed to represent the interests of women artists.该协会建立代表女性艺术家的长处。

representative [reprɪˈzentətɪv] n.代表,典范人物

republic [rɪˈpʌblɪk] n. 共和国

reputation [repjʊˈteɪʃ(ə)n] n. 名声, 光荣

request [rɪˈkwest] n. 哀求, 请求的事物

He came at my request. 在我的请求下,他来了。

make a request 提出请求

He requested that his guests (should) sit down. 他宴客人们坐下。

require [rɪˈkwaɪə(r)] vt. 需求;请求

requirement [rɪˈkwaɪəmənt] n. 必要; 请求; 需要的前提

The floor requires washing/to be washed. 地板必要被洗。

meet your requirements 知足你的请求/必要

rescue [ˈreskjuː] vt. 救援, 搭救

research [rɪˈsɜːtʃ] n. 钻研, 查询拜访

do/carry out some research on cancer 做关于癌症的钻研

resemble [rɪˈzemb(ə)l] v. (不消举行时)像, 看起来像

reservation [rezəˈveɪʃ(ə)n] n. 预定

reserve [rɪˈzɜːv] n. & v. 储蓄;预定

reserve something for somebody

I'd like to reserve a table for three for eight o'clock.我想要预定一张晚上八点钟三小我的桌子。

These seats are reserved for special guests.这些坐位是为特别客人预留的。

resign [rɪˈzaɪn] v. 告退

He resigned as manager after eight years. 八年后,他辞去了司理的职位。

Two members resigned from the board.两个成员从董事会告退了。

resign doing something 听凭/只好接管做……

resist [rɪˈzɪst] v. 抵当;挡开

respect [rɪˈspekt] vt.& n. 尊重, 尊敬

have respect for sb=show respect to sb 尊重或人

in all respects=in every respect 在各方面

respond [rɪˈspekt] v.答复,回应,作出反响

responsibility [rɪspɔnsɪˈbɪlɪtɪ] n. 责任, 卖力

rest [rest] n. 苏息;残剩的部门, 其余的人(物) vi. 苏息, 安息

the rest 其余的,残剩的

take/have a rest 苏息一下

The rest of the money was given away to the poor.残剩的钱被给了贫民。

restaurant [ˈrestərɔnt; (US) ˈrestərənt] n. 饭店, 饭馆

restrict [rɪˈstrɪkt] v. 限定

restriction [rɪˈstrɪkʃ(ə)n] n. 限定, 束缚

result [rɪˈzʌlt] n. 成果, 结果

as a result 成果

as a result of 由于/因为……

result in 致使,发生

resulte from 由……造成,因为

It snowed heavily. As a result, he was late. 雪下得很大,成果,他迟到了。

He was late as a result of the snow. 因为下雪他迟到了。

The driver’s carelessness resulted in the accident. 司机的粗心致使了变乱。

The accident resulted from the driver’s carelessness. 变乱是由司机的粗心酿成的。

retell [riːˈtel] vt. 重讲, 反复, 复述

retire [rɪˈtaɪə(r)] v. 退休

return [rɪˈtɜːn] v. 奉还

return to China from abroad 从外洋回国

return sth to sb= return sb sth 把某物奉还给或人

I gave him an apple and he gave me a peach in return. 我给了他一个苹果,作为回报,他给了我一个桃子。

reuse [riːˈjuːz] vt. 从新利用;轮回利用

review [rɪˈvjuː] vt. 从新查询拜访; 回首; 温习 n. 复查;温习;评论

review one’s lessons 温习作业

book review 书评

reviewer [rɪˈvjuːə(r)] n. 评论者;书评家

revision [rɪˈvɪʒ(ə)n] n. 温习, 复习

revolution [revəˈluːʃ(ə)n] n. 革命, 变化

reward [rɪˈwɔːd] n. 奖赏

reward sb for sth/doing sth 因……报酬或人

She was rewarded for her efforts with a cash bonus. 她因为尽力被嘉奖了一笔奖金。

She started singing to the baby and was rewarded with a smile.她起头给孩子唱歌,被孩子嘉奖了一个微笑。

You deserve a reward for being so helpful. 你帮了这么大忙,应遭到嘉奖。

rewind [riːˈwaɪnd] v. 反转展转(磁带等)

rewrite [riːˈraɪt] vt. 重写

rhyme [raɪm] n./ v. 压韵

rice [raɪs] n. 稻米;米饭

rich [rɪtʃ] a. 富饶的, 有钱的

Our country is rich in natural resources.咱们国度天然资本丰硕。

rid (rid, rid / ridded, ridded) [rɪd] vt. 使解脱

rid sb of sth 使或人解脱……

Further measures will be taken to rid our streets of crime.更多办法将被采纳以使咱们的街道解脱犯法。

rid oneself of somebody/something 解脱或人/某物

He wanted to rid himself of the burden of the secret. 他想要解脱这个机密给他带来的包袱。

get rid of somebody/something 解脱或人/某物

We got rid of all the old furniture. 咱们解脱了所有的旧家具。

riddle [ˈrɪd(ə)l] n. 谜(语)

ridiculous [rɪˈdɪkjʊləs] a. 荒诞的, 愚笨的

ride (rode, ridden) [raɪd] v. 骑(马、自行车);搭车 n. 搭车观光

ride (on) a horse/train 骑马/坐车

give sb a ride 让或人乘车

It is two hours’ ride from here.从这里有两个小时的搭车/骑车路程。

right [raɪt] n.权力 a.对,准确的 ad. 准确地,偏偏,彻底地 a. 右,右侧的

all right 好吧

That’s all right. 不要紧。(答复报歉的话)

have the right to do sth 有权力做某事

turn to the right=turn right 向右转

on the right 在右侧

keep to the right 靠右侧走

right-handed [raɪt-hænd] a. 习用右手的

right-wing [raɪt-wɪŋ] n. 右翼

ring (rang, rung) [rɪŋ] v. (钟、铃等)响;打德律风 n. 德律风, 铃声 n. 环形物(如环、圈、戒指等)

ring the bell 按铃

ring off 挂断德律风

ring up a doctor 给大夫打德律风

ring back 回德律风

a wedding ring 婚戒

the rings of a tree 树的年轮

ring-road [rɪŋ-rəʊd] n. 环形公路

rigid [ˈrɪdʒɪd] a. 枯燥的,僵直的,刚强的

ripe [raɪp] a. 成熟的, 熟的

ripen [ˈraɪpən] v. 成熟

rise (rose, risen) [raɪz] vi. 上升, 上涨

The sun rises in the east.

He rises at 6:00 every day.

give sb a rise 给或人涨工资

on the rise 在增加

risk [rɪsk] n./ v. 伤害, 危害, 冒险

She took many photos at the risk of her life.她冒着生命伤害拍了不少照片。

He took the risk of losing his life to save the child. 他冒着落空本身生命的伤害救了这个孩子。

risk one’s life 冒着生命伤害

There is the risk of your catching a cold. 你可能会伤风。

river [ˈrɪvə(
高考英语3500词汇(R) 单词+词组+句型插图
r)] n. 江;河;水道;巨流

road [rəʊd] n. 路, 门路

roast [rəʊst] v. 烤(肉)

rob [rɔb] v. 掠取, 掳掠

rob sb of sth 掳掠或人某物

The tomb had been robbed of its treasures.这个宅兆的财宝物掳掠了。

robot [ˈrəʊbɔt] n. 呆板人

rock [rɔk] n.岩石,大石头vt. 摇,摇摆

The town was rocked by an earthquake. 这个城镇被地动摆荡了。

He sat rocking in his chair. 他坐着,在椅子里摇摆。

rocket n. 火箭

role [rəʊl] n. 脚色

roll [rəʊl] v. 转动, 打滚 n. 面包圈, 小圆面包;卷状物

The ball rolled into the hole. 球滚到了洞里。

The clouds are rolling away. 云彩卷走了。

roll the wool into a ball 把羊毛滚成球

He rolled up the window of the car. 他摇上了车窗。

roller [ˈrəʊlə(r)]n. 滚筒; 辊

roller skatingn 滑旱冰

roof [ruːf] n. 屋顶, 顶部

room [rʊm] n. 房间,室;空间;处所

takes up too much room 盘踞太多的空间

make room for… 为……腾处所

rooster [ˈruːstə(r)] n. (美)公鸡

root [ruːt] n. 根, 本源, 发源

rope [
高考英语3500词汇(R) 单词+词组+句型插图1
rəʊp] n. 绳, 索

rose [rəʊz] n. 玫瑰花

rot [rɔt] vi. 烂; 败北

rough [rʌf] a. 粗拙的, 大略的

rough paper 粗拙的纸

rough road 高卑的公路

rough words 粗暴的话

rough weather 卑劣的气候

rough sea 澎湃的大海

round [raʊnd] ad. 转过来 prep. 环抱一周, 围着 a.圆的;球形的

a girl with a round face 一个圆脸女孩

The earth moves round the sun. 地球绕着太阳转。

Round our mouths to pronounce the word. 张圆咱们的嘴发这个单词的音。

roundabout [ˈraʊndəbaʊt] a. & n. 绕道的, 不直接的;转盘路

routine [ruːˈtiːn] n. 通例,正常次序,无聊

row [rəʊ] n.(一)排,(一)行 v.荡舟

a row of trees 一排树

in a row 成一排,持续地

royal [ˈrɔɪəl] a. 皇家的, 王室的, 国王的, 女王的

rubber [ˈrʌbə(r)] n. 橡胶; 合成橡胶

rubbish [ˈrʌbɪʃ] n. 垃圾; 废料

rude [ruːd] a. 无理的, 粗暴的

rudely adv.粗暴地;无理地

rudeness n. 粗暴;无礼

rugby [ˈrʌɡbɪ] n. (英)橄榄球

ruin [ˈruːɪn] vt. (使)损坏;(使) 扑灭 n. (复) 废墟;遗址

The country was ruined by the war.这个国度被战役毁了。 The bad weather ruined our trip.糟的气候毁了咱们的观光。

That one mistake ruined his chances of getting the job.那一个毛病毁了他获得这份事情的机遇。

Years of fighting have left the area in ruins. 多年的战役使这个地域成了废墟。

rule [ruːl] n. 法则,划定 vt.统治,安排

follow/obey rules 遵照法则

break the rules 粉碎法则

He makes it a rule never to borrow money. 他使历来不借钱成了一个法则。

ruler [ˈruːlə(r)] n. 统治者;直尺

run (ran, run) [rʌn] vi. 跑, 奔驰;(色彩)退色

The college runs su妹妹er courses for foreign students. 这所大学为外国粹生开办了夏日课程。

Could you run(操作)the engine for a moment?

The tears ran down her cheeks.

The color of the clothes runs(掉色)easily.

run across sb/sth 偶遇……

run after 追逐,寻求

come running 跑过来

run into sb./sth. 撞上……

run out 被用完

run out of sth 用完……

run over 压曩昔

runner [ˈrʌnə(r)] n. 竞走者;操作者;滑行装配

running [ˈrʌnɪŋ] n. 跑步

rush [rʌʃ] vi. 冲, 奔驰

We’ve got plenty of time; there is no need to rush.咱们有不少时候,没有需要慌忙。

The injured were rushed to the hospital. 受伤的人被慌忙送到了病院。

during the rush hour 在交通岑岭期

Russia [ˈrʌʃə] * n. 俄罗斯, 俄国

Russian [ˈrʌʃ(ə)n] a. 俄国人的, 俄语的 n. 俄国人, 俄语

作者: admin

为您推荐

联系我们

联系我们

工作时间:周一至周五,9:00-17:30,节假日休息

关注微信
微信扫一扫关注我们

微信扫一扫关注我们

关注微博
返回顶部