Is there a precedent for what you want me to do? 你要我做的事有先例吗？
The judgment set a new precedent. 那次判决树立了一个新的判例。
In civil law law department country,legal precedent has no binding force but has convincible force in practice. 在民法法系国家,判例并没有约束力,但在实践中,它具有说服力。
We may as well assert that because a child has thriven upon milk, that it is never to have meat, or that the first twenty years of our lives is to become a precedent for the next twenty. 你还不如说，因为一个孩子是吃奶长大的，所以他永远不该吃肉，或者说，我们一生的开头二十年应该成为第二个二十年的先例。