1. have a grumble:抱怨
e.g. He has a grumble about being badly paid.
他抱怨待遇差。
2. cheer up:高興起來,振作起來
e.g. Cheer up, I'm only trying to make you jealous.
別不高興,我只不過想引你吃醋。
e.g. Cheer up, man. Things are not as bad as you think.
振作點,老兄。情況沒你想的那么嚴重。
e.g. Cheer up. It'll all come right in the end.
想開些,到頭來總會好的。
e.g. Cheer up! Our troubles will soon be over.
振作起來!我們的困難很快就會過去。