| 单词 | sine qua non |
| 释义 | sine qua non I. 1. < the sine qua non … is that the star shall appear bright enough to give a measurable spectrum — Herbert Dingle > 2. < this book is a sine qua non for Mill scholars — W.D.Templeman > II. < wider spaced patterns are … sine qua non in men's wardrobes — New York Times > < it's the sine qua non sense — Amy Lowell > |
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