Have you countersigned any of the checks?

您曾复签过任何支票吗？

The payment has to countersigned by the mortgagor.

该付款必须有抵押人的会签。

These checks are not valid until they are countersigned.

这些支票只有在副签后才有效。

My lawyer countersigned the document after I had signed it.

我在文件上签字以后，我的律师进行了会签。

Traveler's check are not valid until they are countersigned.

旅行支票只有在背面签字之后才有效。