名词
中文翻译：塔指示器
同义词：
['tower indicator', 'tower indicator device', 'tower indicator instrument']
例句：
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1. The tower indicator on the bridge is used to indicate the direction of traffic.
桥上的塔指示器用来指示交通方向。
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2. The tower indicator was designed to help pilots navigate during bad weather conditions.
塔指示器被设计来帮助飞行员在恶劣天气条件下导航。
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3. The tower indicator is a crucial component of the navigation system for aircraft.
塔指示器是飞机导航系统的关键组成部分。