名词
中文翻译：吊桥信号
同义词：
['drawingbridge signal', 'drawbridge signal', 'drawbridge signal']
例句：
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1. Thedrawbridge signal was a warning that thebridge was about to be closed.
吊桥信号是一个警告，表示桥梁即将关闭。
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2. Thedrawbridge signal was used to prevent peoplefrom crossing the bridge when it was closed.
吊桥信号被用来在桥梁关闭时阻止人们过桥。
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3. The drawbridge signal was an importanttool for maintaining safety on thebridge.
吊桥信号是维护桥梁安全的重要工具。