名词
中文翻译:口哨信号
同义词:
['whistle', 'whistle signal']
例句:
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1.The policemen used a whistle signal to warn the crowd of danger.
警察使用口哨信号来警告人群危险。
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2.The firefighters used a whistle signal to alert the nearby buildings.
消防员使用口哨信号来通知附近的建筑物。
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3. The pilot used a whistle signal to communicate with the ground crew.
飞行员使用口哨信号与地面机组进行沟通。