| 词汇 | one-swallow-doesn-t-make-a-summer |
| 释义 | one swallow doesn't make a summeridiom saying used to say that because one good thing has happened, it is not therefore certain that a situation is going to improve独燕不成夏（指一件好事的发生并不意味着整体情况会好转） Threats & warnings advance warning alarm alarm bell bell-ringing beware the ides of Marchidiom bomb scare bow brushback pitch burglar alarm cautionary don't you dareidiom early warning system hear warning bellsidiom minatory protection racket red alert red flag scare quotes screamer yellow card |
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