sentry box
noun[C]
uk/ˈsen.tri ˌbɒks/us/ˈsen.tri ˌbɑːks/asmallshelterin which asentrystandswhileguardingaplace
岗亭;哨所fastsnail/iStock/Getty Images Plus/GettyImages
Places involved in military activity
- air bridge
 - air corridor
 - bases
 - Bastille
 - battlefield
 - battleground
 - camp
 - emplacement
 - enceinte
 - fort
 - front
 - front-line
 - garrison
 - Martello tower
 - multi-front
 - observation post
 - obstacle course
 - parade ground
 - PX
 - theatre