7. rainy day 困难的时候/日子
I'll put the rest in the bank for a rainy day.
我要把剩下的钱存进银行为以后困难的日子做准备。
8. A storm in a teacup （茶杯里的风暴）小题大作，本来是小事一件，通过夸张渲染变成了大事。
Lily was calling the police when her cat disappeared, it all sounds like a storm in a teacup.
丽莉发现她的猫丢了就打电话报警，这未免有点小题大做。
9. On cloud nine （直上云霄）非常兴奋，心情好得不能再好了
When the boss announced my promotion ,I was on cloud nine.
老板通告我升职了，我相当高兴。
10. It's an ill wind that blows nobody any good 有福也有祸/有喜也有忧
11. To chase the rainbows (追逐彩虹)痴人说梦，形容不可能发生的好事
You have only started two months ago ,you are already thinking about promotion. Well, I think you're just chasing rainbows.
你才来两个月就想升职，你这是痴人说梦呢。
12. Once in a blue moon 千载难逢，百年不遇，形容极其罕见。
Ben has very little contact with his sister. They see each other once in a blue moon.
Ben和他的姐姐很少联系。他们见一次面可以说是百年难遇。
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