名词
中文翻译：手指引针
同义词：
['compass', 'navigational aid']
例句：
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1. The hand pointer on the map helped us find our way to the airport.
地图上的指南针帮助我们找到了去机场的路。
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2. He used his hand pointer to point out the direction of the sun.
他用他的手指来指出太阳的方向。
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3. The compass was a useful navigational aid in the old days when ships sailed across the oceans.
在旧时代，罗盘是航海者进行海上航行时的一个有用的导航工具。