1. Clean up one's act

自我檢點，自我改進。

I should clean up my act. = I should improve myself.

我應該自我改進。

例子：She told him that if he didn't clean up his act and start looking for a job, she was going to leave him.

他告訴我要是他再不自我改進。并找一份工作，她就要離開他了。

2. Come down in buckets

傾盆大雨。

It is coming down in buckets.

正下著傾盆大雨。

例子：The road was flooded yesterday because the rain was coming down in buckets.

昨天下了一場傾盆大雨，路面都被淹了。

3. Cool your jets

冷靜下來

You need to cool your jets. = You need to be less anxious, nervous, or excited.

你必須冷靜下來。

例子：Cool your jets! The hotel is just around the bend and we will be there soon, so don't ask me again.

別著急，拐了彎就是旅館。我們一會兒就到，所以你別在窮問了。