grouch

1. N-COUNT A grouch is someone who is always complaining in a bad-tempered way. 牢骚满腹的人[非正式]

He's an old grouch but she puts up with him. 他是个老牢骚精，但她容忍他。

2. N-COUNT A grouch is a bad-tempered complaint. 牢骚[非正式]

One of his grouches is the system of payment. 他的牢骚之一是薪酬体制。