| 词组 | once-in-a-lifetime |
| 释义 | once-in-a-lifetime once in a lifetime - only likely to happen once in someone's life. Enter this competition to win a once-in-a-lifetime trip to the Caribbean. (always before noun) |
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英语词组固定搭配大全包含18674条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。