来自拉丁短语proviso quod,规定如下，来自proviso,规定的，词源同provision,quod,那个，词源同quality,what.引申词义限制条款，条文。

1. Okay, with the proviso that Jane agrees, I accept.

好，如果简答应，我就接受。

2. I told Norman I would invest in his venture as long as he agreed to one proviso.

我告诉诺曼只要他答应一个附带条件，我就会为他的项目投资。

3. Jerry added, by way of proviso.

杰瑞说道, 仿佛加上一份“但书”.

4. He accepted, with one proviso, ie on one condition.

他同意了, 但有一个附带条件.

5. You can borrow this book, with the proviso that you return it to me within aweek.

你可以借这本书, 条件是你要在一周内还我书.