do one's homework
动词 v.
英文释义
动词 v.
-
To prepare oneself with the relevant knowledge; to carry out the necessary research in advance.
— As the hearing went on, Harradence impressed me. When the judge asked for his comment on an issue, Harradence had clearly done his homework and was never taken by surprise.
- Used other than figuratively or idiomatically: see do, homework.
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数据来源: Wiktionary