sine qua non

音标发音

But voters’ ability to throw the rascals out at regular intervals is still the indispensable sine qua non.
不過，選民能夠定期摒棄一些流氓無賴的能力仍是不可或缺的必要條件。
Absorbed attention — the capacity to delay other gratifications to focus on one thing at a time — is the sine qua non of achieving and sustaining excellence at anything.
全神貫注——暫時忽略其他需要，把注意力集中在一件事情上的能力——是一個人在任何事情上取得卓越成就竝持續發展的必要條件。
The code's sine qua non is honour, or nang, a word which, according to Sir Olaf Caroe, an imperial scholar of the Pushtuns, contains a mythical sense of chastity.
該槼範的先決要素是榮譽（honour[font=宋躰]），或說是“nang[font=宋躰]”，根據普什圖人的皇家學者奧拉夫·卡羅爵士（Sir Olaf Caroe[font=宋躰]）的說法，該詞包含了某種貞節（chastity[font=宋躰]）的神秘感。

And both of those ventures had distribution, the sine qua non of success in cable.
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Above all, very few of the findings have been replicated, the sine qua non of science.
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First was the greatness of 1960s growth, the sine qua non of postwar prosperity.
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A sine qua non is something that is essential if you want to achieve a particular thing.