先例

Is there a precedent for what you want me to do?

你事有例吗？

In addition, the reporter understands, never sortie net swims the Internet company of business and operation of combination of network game company are in at present precedented already.

此外，记者了解到，从未涉足网游业务互联网公司与网络游戏公司联合运营在现在已有例。

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.

你不如说，因为一个孩子是吃奶长大，所以他永远不该吃肉，或者说，们一生开头二十应该成为第二个二十例。