和雨有关的谚语：
Save for a rainy day
未雨绸缪
例句：We save money for a rainy day。
It never rains but it pours
不雨则以，一雨惊人
例句：I just got sacked and my wife left me！So it never rains but it pours！
right as rain
身体健康，一切正常
例句：I was sick，but now I feel as right as rain。
和云有关的谚语：
on cloud nine
飘飘然如上九重天
例句：She passed the auditon and now she is on cloud nine。
head in the cloud
不切实际，好高骛远
例句：You can't always have your head in the cloud，you need to be down-to-earth。
和彩虹有关的谚语：
chase rainbows
做白日梦
例句：Chsing rainbows won't get you anywhere。
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