2533.radio(名)收音機(jī)
we can listen to music by radio.
我們能透過收音機(jī)聽音樂。

2534.railroad(名)鐵路
美式
Tha railroad runs across the plain.
鐵道穿過平原。

2535.railway(名)鐵路
英式
He engineered a railway．
他設(shè)計(jì)過一條鐵路。

2536.rain(名)雨(動(dòng))下雨
(名):After rain comes fair sunshinei.
雨過天晴。
(動(dòng)):It rains a lot this year.
今年雨下很多。

2537.rainbow(名)彩虹
Look! What a beautiful rainbow!
瞧，多漂亮的彩虹！

2538.raincoat(名)雨衣
He had no raincoat on when the rain started.
開始下雨時(shí)他沒穿雨衣。

2539.rainy(形)下雨的、多雨的
Last week was very rainy;rain fell every day.
上星期多雨，每天都下雨。

2540.range(動(dòng))涉及(名)范圍、區(qū)域
(動(dòng)): Our conversation ranged over many tapics.
我們的談話涉及很多問題。
(名):Do you know the range of final?
你知道期末考的范圍嗎？

2541.rapid(形)迅速的、快的
Growth is rapid in infancy.
幼兒期的成長相當(dāng)快。

2542.rapidly(副)迅速地
His health degenerates rapidly.
他的健康迅速惡化。

2543.rat(名)老鼠
比mouse大
The cat nosed out a rat.
貓嗅出有一只老鼠。

2544.rate(名)速率；比率
The rate of inflation decreased t0 10% last year.
去年通貨膨脹率降低為百分之十。

2545.rather(副)相當(dāng)?shù)兀慌c其……不如
Rathar than causing trouble，he left．
他不愿意惹麻煩，寧可離開。

2546.reach(動(dòng))到達(dá)；伸手；打動(dòng)心坎
By 2008, that figure is expected to reach 7 million.
到2008年，這一數(shù)字預(yù)計(jì)將達(dá)到七百萬。

2547.read(動(dòng))讀；研究
不規(guī)則變化read，read
I can read French but l can't speak it.
我能看懂法文，但不會(huì)說。

2548.reader(名)讀者、讀書人
That book suits general readers most．
那本書最適合一般讀者。

2549.readily(副)迅速地
Wherever he goes, he rendily accommodates to changed conditions.
不管到哪兒，他都能迅速適應(yīng)變化的情況。

2550.reading(名)讀物；學(xué)識(shí)
Reading makes a full man.
閱讀使人充實(shí)。

2551.ready(形)準(zhǔn)備好的；樂意的
He is always ready to help his claasmates with their lessons.
他總是樂于幫助同學(xué)們復(fù)習(xí)功課。

2552.real(形)真實(shí)的
WN didn't believe their threats for real．
我們不相信他們的威脅是真的。

2553.reality(名)現(xiàn)實(shí)、真實(shí)性
Millions of people live with the harsh realities of unemployment.
數(shù)以百萬計(jì)的人們正活在失業(yè)的嚴(yán)酷現(xiàn)實(shí)中。

2554.really(副)真正地
The government's new higher taxes are really beginning to bite．
政府提高稅收的新措施真的開始引起不滿了。

2555.reason(名)理由
The reason that she did it is still a mystory.
她為什么做那件事仍是一個(gè)謎。

2556.reasonable(形)合理的、有理由的
反義詞unreasonable
They advanced many reasonable proposals.
他們提出了許多合理化的建議。

2557.reasonably(副)合理地
You are not behaving reasonably．
你的行為不合情理。

2558.rebuild(動(dòng))重建
The house was rebuilt after it was hit by a bomb．
這棟房子在被炸彈擊中后重建。

2559.record(名)前科;記錄(動(dòng))記錄、錄音
(名): The doctor keeps a record of all the sarious illnesses in the village.
這個(gè)醫(yī)生保存了這個(gè)村莊所有嚴(yán)重疾病的記錄。
(動(dòng)): Would you please record the speech?
你可以幫忙記錄這場演講嗎？

2560.recorder(名)答錄機(jī)；記錄者
Where shall put the recorder?
我該把答錄機(jī)放在哪里？

2561.recording(名)錄音
Don't fool with the recording equipment．
別瞎弄錄音設(shè)備。

2562.recycle(動(dòng))使回收、使再循環(huán)
We must recycle the cardboard boxes．
我們必須將紙盒子回收。

2563.red(形)紅色的
The little girl's eyes were red with weeping．
那個(gè)小女孩哭得兩眼通紅。

2564.region(名)地區(qū)
l prefer to live in a cold region.
我寧愿住在寒冷的地區(qū)。

2565.regional(形)區(qū)域性的、地區(qū)的
Most regional committees four time a year．
大部分地區(qū)委員會(huì)每年開會(huì)四次。

2566.regular(形)定期的；整齊的；正常的
反義詞irregular
Evarything seemed quite regular when the fire broke out.
當(dāng)火起的時(shí)候，一切似乎都很正常。

2567.regularly(副)定期地
Both girls write to each other regularly now.
兩個(gè)女孩正在定期互相通信。