You may exchange the shoes but not return them for a refund.

"你可这双鞋,但不能退货。"

This worker wants a transfer to another post.

这个人要求种。

Changing her job like that is equivalent to giving her the sack.

那样她的于是解雇她。

I got it on seventeen days approval,so if you don’t like it we can change it.

我买这件东西可试用17,所以你要是不喜欢我们可以拿去。

If the equipment is not up to the agreed specifications and quality, we will undertake to replace them.

果设备达不到议定的规格质量, 我们将负责。