缩写	全称	中文释义
S2	Shuttle 2	穿梭机2
S-2	Battalion or Brigade Intelligence Staff Officer (Army	营或旅情报参谋长（陆军
S2	Secondary 2	中二
S-2	Second Sacral Vertebra	第二骶椎
S-2	Marine Corps Battalion or Regiment)	海军陆战队营或团）
S-2	Army Intelligence Staff at the Battalion/Brigade level	营/旅级陆军情报人员