边境哨所是军队用来监视敌方活动的重要前哨。

The border ___outposts are crucial for the army to monitor enemy activities.

这个军事前哨站位于国家最西部的边境线上。

The military ___outpost is located at the westernmost border of the country.

这家公司在偏远山区设立了一个销售办事处。

The company set up an ___outpost in the remote mountain area for sales operations.