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sine qua non
词根词缀
sine qua non
必要条件
来自拉丁短语sine qua non, 必不可少,来自sine, 无,+qua, 某人,某事,某物,来自PIE→*kwo-, 疑问代词词干,词源同who, what, which, +non, 无。字面意思即没有某人或某物不行。
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更新时间:2025/9/17 4:29:08