这出戏很无聊，我决定适可而止，提前离开了。

The play was dull and I decided ___enough ___is ___enough and left early.

多年来我一直工作很努力，但现在我觉得适可而止了。

I have been working very hard for years, but now I think ___enough ___is ___enough.

当投诉不断堆积时，经理终于宣布够了，并采取了行动。

When the complaints kept piling up, the manager finally declared ___enough ___is ___enough and took action.