- qui vive
[qui vive 词源字典]
- 1726, in on the qui vive "on the alert," from French qui voulez-vous qui vive? sentinel's challenge, "whom do you wish to live," literally "(long) live who?" In other words, "whose side are you on?" (The answer might be Vive la France, Vive le roi, etc.).[qui vive etymology, qui vive origin, 英语词源]