“One swallow doesn't make a summer” 是一句英文谚语，字面意思是 “一只燕子飞来了，并不代表夏天已经来临”。我们用这句谚语来谈论一件好事，并提醒他人 “只因一件好事发生了，并不意味着整个局面会有所改善”，可以理解为 “不要高兴得太早”。

例句

Just because he has apologised this time, doesn't mean your relationship will improve on the whole. One swallow doesn't make a summer.

就因为他这次道歉了，并不意味着你们的关系会在整体上有所改善。不要过早地下结论。

You know what they say: 'One swallow doesn't make a summer'. Let's enjoy the moment, but not expect the year to improve just yet.

俗话说得好：孤燕不成夏。让我们享受当下，但先不要指望这一年的情况会变好。

I think we need to be cautious – sure, the predicted financial results look good, but one swallow doesn't make a summer.

我认为我们需要谨慎点。预测的财务结果确实看起来不错，但我们并不能太早下判断。