Definition
Used to tell someone to cease a particular unwanted behavior.
夠了！行了！(停止不當行為)
That'll do, children! Stop fighting; it's time to start our homework.
夠了，孩子們！別再打架了，該開始寫作業了。
That'll do! You've played too many video games, it's time to do something else.
夠了！你玩太多電子遊戲了，該做點別的事了。
That'll do, stop fooling around! We're in a public place, please be quiet.
夠了，別再胡鬧了！我們在公共場所，請保持安靜。