每日商務英語 第600期:脾氣壞的

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crotchety ----------- 脾氣壞的（形容詞，非正式）

英文釋義
(adjective, INFORMAL) Tending to complain about minor problems; easily annoyed; grumpy.

例句
My grandfather becomes crotchety when he's tired, and nothing seems to please him.
我祖父一累脾氣就變壞，好像什麼事都不能讓他高興。