They set off, two men out in front as scouts, two behind in case of any attack from the rear.

他们出发了，两人在前作为侦察员，两人在后防守后方攻击。

I wouldn't have time to scout the area for junk.

我没有时间在那里找废物。

A team of four was sent to scout for a nuclear test site.

一个四人小组被派去寻找核试验基地。