n.停止,放松,减弱;
例句:
A heavy downpour like this in summer is sure to let up soon.
在夏天这么大的雨肯定很快就会停的.
We thought the rain would let up soon.
我们觉得雨不久会停.
We mustn't let up, even though we're winning.
我们即使快赢了也决不可松劲.