heavy rains
it rains
acid rain
rains heavily
A: Look! It rains so much today.
A：看！今天雨下得真大。
B: Yes, we should stay indoors.
B：是的，我们应该待在室内。
1) 下雨 (动词三单)
2) 降雨 (名词复数)
3) 雨水
1. 下雨
2. 降雨
verb
1. To fall as water droplets from the sky.
noun
1. Periods of precipitation.