side-arm双路并联式
outer side bracket arm单材拱
side-arm bridge侧臂桥
side-arm stroke侧手球
side-arm electrode侧臂电极
Driver side wiper arm发明名称
side-arm service侧身发球
side-arm stroke detail侧手球
side drag arm hopper dredge吸耙设在舷侧的耙吸式自航挖泥船
N-COUNT（可数名词） Sidearms are weapons, usually small guns, that you can wear on a belt. 随身携带的武器(通常指小手枪) [usu pl]
Two guards with sidearms patrolled the wall.
两名配枪警卫在城墙上巡逻。