do one's duty
动词 v.
英文释义
动词 v.
-
Synonym of use the toilet: to urinate or defecate.
— And when I was being toilet-trained as a very little boy, she'd always ask, "Have you done your duty?" That was the word for it.
- Used other than figuratively or idiomatically: see do, duty.
词源
From doo-doo, doody, etc. used as euphemisms for shit.
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数据来源: Wiktionary