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1. radius [?re?di?s] n.(radii/ radiuses)

n. 半徑;半徑(范圍)，周圍

拓展：

同：n. semidiameter

派：radioprotection n.輻射防護(hù)

radiosensitivity n.[核][物] 輻射敏感度

例句：Free delivery is available within four-miles radius of the mall.

距離商場4英里的范圍內(nèi)可以免費(fèi)送貨上門。

Doris has searched for work within a ten-mile radius around his home.

桃瑞絲一直在他家周圍10英里的范圍內(nèi)找工作。

2. rag [r?ɡ] v.(rags, ragging, ragged, ragged)/n.(rags)

v. 嘲笑，戲弄

n. 抹布;質(zhì)量低劣的報紙;慈善募捐活動

固定搭配：rag sb. (about sth.) 嘲笑，戲弄

rag on sb. 向某人抱怨(或埋怨、發(fā)牢騷)

in rags 衣衫襤褸，穿著破舊

拓展：

同：v. rate n. clast, trashiness

例句：She was about forty, twenty years older than the youngsters ragging her.

她大概有40歲，比那些嘲弄她的年輕人大20歲。

The refugees in this country were dressed in rags.

這個的難民穿著破衣爛衫。

3. raid [re?d] v.(raids, raiding, raided, raided)/n.(raids)

v. 突擊搜捕，突然搜檢;偷襲，突襲;打劫

n. 突襲;突擊搜捕，突然搜檢;打劫

固定搭配：raid (on sth.) 突襲

拓展：

同：v. hit n. robbery, assault

派：raider n.襲擊者，侵入者

例句：He was caught raiding the fridge again.

他又在掃蕩冰箱里的食物被撞見了。

They are carrying out a bombing raid on enemy bases.

他們準(zhǔn)備突然出擊，轟炸敵軍的基地。

4. rail [re?l] v.(rails, railing, railed, railed)/n.(rails/rail)

v. 怒斥，斥責(zé)，抱怨

n. 欄桿，扶手，柵欄;(固定在墻上用以掛物品的)桿子;鐵路，軌道

固定搭配：rail (at/against sth./sb.) 怒斥，斥責(zé)，抱怨

go off the rails 舉止怪異，行為出軌;失去控制，無法正常運(yùn)行

拓展：

同：v. rate n. pen, rider

派：railing n.欄桿;扶手

例句：She railed against the injustice of the sentence.

她怒斥判決不公正。

It is said that the company has gone badly off the rails in recent years.

據(jù)說這家公司最近幾年已經(jīng)陷于嚴(yán)重癱瘓。

5. railroad [?re?lr??d] v.(railroads, railroading, railroaded, railroaded)/n.(railroads)

v. 強(qiáng)迫……倉促行事;強(qiáng)使……草率通過;輕率判處

n. 鐵路，鐵軌

固定搭配：railroad sb. (into sth./into doing sth.) 強(qiáng)迫……倉促行事

railroad sth. (through/through sth.) 強(qiáng)使……草率通過

拓展：

派：railway n.(英)鐵路;軌道;鐵道部門

railroader n.[鐵路] 鐵路員工

railroading n.鐵路建設(shè);倉促行事

railway v.乘火車旅行

例句：The bill was railroaded through the House under pressure.

迫于壓力，議院不得已草率通過了這項提案。

This town has been much more convenient since the railroad came in the 1860s.

自從19世紀(jì)60年代通了火車之后，這座城鎮(zhèn)便利了許多。

6. railway [?re?lwe?] n.(railways)

n. 鐵路，鐵軌;鐵路公司，鐵道部門，鐵路系統(tǒng)

拓展：

同：n. path, track, trajectory, orbit

派：railroad n.鐵路;鐵路公司

railcar n.氣動車，軌道車

railhead n.[鐵路] 軌頭;鐵路末端

railroader n.[鐵路] 鐵路員工

railroading n.鐵路建設(shè);倉促行事

railwayman n.(英)鐵路員工

railroad v.在鐵路工作;乘火車旅行;筑鐵路

railroad v.由鐵道運(yùn)輸;鋪設(shè)鐵路;捏造不實(shí)使入獄

例句：The railway has been under construction for a long time.

這條鐵路建設(shè)很久了。

Her parents worked on the railways.

她父母在鐵路部門工作。

7. rain [re?n] v.(rains, raining, rained, rained)/n.(rains)

v. (使)大量降落，(使)大量落下;下雨

n. 雨水;(熱帶地區(qū)的)雨季;雨點(diǎn)般降落的東西

固定搭配：rain (sth.) (down) (on sb./sth.) (使)大量降落，(使)大量落下

be rained off 因雨取消(或中斷)

拓展：

同：n. wet, monsoon

派：rainy adj.下雨的;多雨的

rainless adj.缺少雨的;無雨的

rainmaking adj.求雨的;造雨的

raininess n.多雨;雨量強(qiáng)度

rainmaking n.求雨;[氣象]人工降雨;翻云覆雨;使受委托人得到政治好處

例句：The final has been rained off again.

決賽又一次因雨而被取消。

We couldn’t go out until the rain stops.

我們要等到雨停了才能出去。

8. rainbow [?re?nb??] n.(rainbows)

n. 彩虹

例句：The sun was casting a rainbow through the spray from the waterfall.

太陽在瀑布濺起的水霧上照出了一道彩虹。

The second rainbow will be bigger than the first, and directly under it.

第二道彩虹將比第一道還要大，而且正好位于其下。

9. raise [re?z] v.(raises, raising, raised, raised)/n.(raises)

v. 提高，舉起，提起;站立，直立;增加，提高;籌募，征集，聚集，組建;提及;引起，導(dǎo)致;養(yǎng)育，培養(yǎng);飼養(yǎng)，培育，種植; 終止，解除(約束);與……聯(lián)系，和……通話;使復(fù)活;在(另一玩牌人)基礎(chǔ)上加注

n. 加薪

固定搭配：raise sth. (to sth.) 增加，提高

raise sb. (from sth.) 使復(fù)活

raise sth. to sb./sth. (為……)建造，樹立(塑像等)

拓展：

同：v. enhance, mother, foster, breed, arise

派：raised adj.凸起的;發(fā)酵的;浮雕的

raising n.高地;提高;舉;浮雕裝飾

辨：raise, lift和hoist

raise意為“舉起，抬起”，常指用體力將某事物抬高或舉高，也指抬起眼睛、頭或臉以向上看。例：He suddenly raised his eyes and stared at her.(他突然抬眼盯視著她)

lift意為“舉起，抬起”，語氣比raise強(qiáng)，指用體力或機(jī)械將人或事物舉起，也指抬起某一身體部位。例：The stone is too heavy for me to lift.(這塊石頭太重了，我搬不起來)

hoist意為“吊起，升起”，常指用繩索、起重機(jī)等把某物升起。例：The flagmen hoisted the flags in the morning.(旗手們早晨升起了旗幟)

例句：The city raised a memorial to those killed in the war.

這座城市為戰(zhàn)爭中犧牲的人樹立了一座紀(jì)念碑。

Shortly after joining the company, Kelly got a raise.

入職不久凱利就獲得了加薪。

10. rake [re?k] v.(rakes, raking, raked, raked)/n.(rakes)

v. 耙平，梳理;掃視，掃過，掃射;搜索;刮，搔，抓

n. 耙子;浪子

固定搭配：rake in sth. 賺大錢(尤指輕易地)

rake over sth. 重提往日某事

raise sth. to sb./sth. (為……)建造，樹立(塑像等)

拓展：

同：v. seek, slope n. pendence, obliqueness

例句：She’s not been raking it in since she started her job.

她自從工作以來，并沒有賺很多錢。

He was a poor hand at farming and held his rake clumsily.

他不會干農(nóng)活，拿起耙子來沒個架勢。