| 词组 | a sine qua non |
| 释义 | a sine qua non formal something that is necessary, especially if you are going to achieve a particular thing. The company sees training as the sine qua non of success. (often + of) |
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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。