| 单词 | 一劳永逸 |
| 释义 | 一劳永逸一劳永逸[yī láo yǒng yì]1.■put things right once and for all; be efficacious forever; do sth. well so that one never has to do it again; for good and all; get sth. done once (and) for all; labour for sth. that holds good for all the time; once and for all; solutions that hold good for all time; strain to reach a solution good for all the time |
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