outpost
/ˈaʊtpəʊst/noun
1- a small military camp or position at some distance from the main army, used especially as a guard against surprise attack前哨。
1.1
- a remote part of a country or empire边疆。
1.2
- figurative something regarded as an isolated or remote branch of something〈喻〉孤立部分, 边远部分：
the community is the last outpost of civilization in the far north.
该社区是在遥远北方的最后一个边远文明居民点。