pointer
n. 指针；指示器；教鞭；暗示
复数 pointers
例句
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。
《柯林斯英汉双解大词典》
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。
She tapped on the world map with her pointer.
她用教鞭轻点在那张世界地图上。
