She tapped on the world map with her pointer. 她用教鞭轻点在那张世界地图上。
A series of levers joined to a pointer shows pressure on a dial. 一系列控制杆连着一枚指针,在刻度盘上显示出压力数。
During tests over several days, the pointer or tracker tracked an IR source and directed a laser beam at that source. 在几天的测试中,指示器或跟踪器跟踪一个红外光源,并引导激光束击中目标。