You'd better take an umbrella, you never can tell if it's going to rain.
你最好带把雨伞，说不定会下雨的。
Dark clouds denote rain.
乌云是下雨的预兆。
It doesn't look like rain.
不像要下雨的样子。
I opine that it will rain before night.
我想天黑以前要下雨的。
Directly it began to rain, and it rained like all fury.
随后，就下起雨来，下起猛烈的大雨。
To rain gently in fine, mistlike drops.
下毛毛雨下小而轻，似雾的雨点
Put on your rain coat--it's pouring outside!
穿上你的雨衣外面下着大雨。
Put on your waterproofs. It's going to rain.
穿上你的雨衣。天要下雨了。
If it really rains, we can share the umbrella.
如果真的下雨，我们可以共用这把雨
The few small rivers could not hold all the rain that fell during the wet season.
几条小河容不下雨季的全部雨水。
You had better put on your raincoat, for it is raining.
你最好穿上你的雨衣，因为天在下雨。
The Structure and Character of Mei yu Front Storm over the Middle and Lower of Yangtze River
长江中下游梅雨锋暴雨的结构和特征
a rainy afternoon, month, etc
多雨的下午、 月份等
It rained hard all day.
下了一整天的大雨.
It' s raining again what miserable weather !
又下雨了，多恼人的天气！
the drip from the raincoat
从雨衣上滴下的水珠
Yes! There will be some showers this afternoon.
是的！今天下午会有阵雨。
A cold drizzle was falling.
冰冷的毛毛雨正在下。