Traveler's check need countersigning.

旅行支票要复签。

Would you mind countersigning them here?

有劳您将支票副签一下，好妈?。

The strong modeling ability of document flow is also needed by countersigning system.

同时，它对文件流转流程也要有较强的建模的能力。

We have made a footnote on the contract to that effect and are returning herein one copy of the contract after duly countersigning it.

我方已就上述内容在合同上作了注脚。随函寄回已正式回签了的合同一份，请查收。