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单词 sine qua non
释义

WordReference Random House Learner's Dictionary of American English © 2024
si•ne qua non /ˈsɪneɪ kwɑ ˈnoʊn, ˈnɑn, kweɪ/USA pronunciation  n. [countable* usually singular]
  1. Foreign Termssomething that cannot be left out;
    a necessity:The actress's presence was the sine qua non of any party.

WordReference Random House Unabridged Dictionary of American English © 2024
si•ne qua non  (sī′nē kwā non′, kwä, sin′ā; Lat. si′ne kwä nōn′),USA pronunciation 
  1. Foreign Termsan indispensable condition, element, or factor;
    something essential:Her presence was the sine qua non of every social event.
  • Late Latin sine quā (causā) nōn without which (thing) not

Collins Concise English Dictionary © HarperCollins Publishers::
sine qua non Latin: /ˈsaɪnɪ kweɪ ˈnɒn/ n
  1. an essential condition or requirement
Etymology: literally: without which not
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更新时间：2025/7/22 20:52:20