I'll mount guard over the luggage while you get the ticket.

你去买票，我来看管行李。

《新英汉大辞典》

That was what it was thought I, to have the captain wounded; and again I blamed myself sharply for leaving them in that danger with so few to mount guard.

我认为这是船长负了伤的结果，于是我又一次责怪自己，不该在几乎派不出人放哨的时候撇下他们，使其面临这样的危险。

youdao

By analyzing negotiation based coordination methods and Contract Net Protocol, the cooperation model of "station based on requirement, mount guard through competition" is presented.

在分析了基于协商的协作方法、合同网协商协议的基础上，提出了按需设岗，竞争上岗的协作模型。

youdao