mass noun
1- the condensed moisture of the atmosphere falling visibly in separate drops雨, 雨水：
the rain had not stopped for days
雨好多天未停过
it's pouring with rain.
大雨倾盆。
1.1
rains
falls of rain降雨：the plants were washed away by some unusually heavy rains.
植物被超大降水冲走了。
1.2
- in sing. a large or overwhelming quantity of things that fall or descend（降雨般的）一阵; （大量的）降落物; 倾泻物：
he fell under the rain of blows.
他在一阵拳打脚踢下倒下了。
no obj.(it rains, it is raining, etc.)
1- rain falls下雨：
it was beginning to rain.
开始下雨了。
1.1
- poetic/literary (of the sky, the clouds, etc.) send down rain〈诗/文〉（天空、云团等）降雨。
1.2
- with adverbial of direction(of objects) fall in large or overwhelming quantities（物体）如雨般降下, 大量降下; 倾泻：
bombs rained down.
炸弹雨点般地从天而降。
1.3
- with obj.
it rains -, it is raining -, etc.
used to convey that a specified thing is falling in large or overwhelming quantities［用来表示特定物体如雨般降下］大量降下; 倾泻： it was just raining glass.
玻璃像雨一般掉落下来。
1.4
- with obj. and adverbial of direction send down in large or overwhelming quantities使如雨下, 使大量降下; 使倾泻：
she rained blows on to him.
她对他一阵拳打脚踢。
短语
be as right as rain
- (of a person) be perfectly fit and well（人）非常健康; 毫无问题。
it never rains but it pours
- 见POUR.
rain cats and dogs
- rain very hard大雨倾盆, 大雨滂沱。
- ORIGIN: origin uncertain: first recorded in 1738, used by Jonathan Swift, but the phrase rain dogs and polecats was used a century earlier in Richard Brome's The City Witt.
rain on someone's parade
- informal, chiefly N. Amer. prevent someone from enjoying an occasion or event; spoil someone's plans〈非正式, 主北美〉使扫兴; 破坏某人的计划。
(come) rain or shine
- whether it rains or not不论晴雨; 无论如何：
he runs six miles every morning, rain or shine.
他每天早晨跑六英里, 风雨无阻。
派生词
rainless
adjective词源
Old English regn (noun), regnian (verb), of Germanic origin; related to Dutch regen and German Regen.
短语动词
rain something off（或〈美〉out）
(一般作be rained off)
- cause an event to be terminated or cancelled because of rain因雨终止（或中断）; 使因雨取消（或改期）：
the match was rained off.
比赛因雨改期。