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无线电话中求救〔遇险呼救〕信号 | |||
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无线电话中求救信号; 车、船、飞机发出的国际无线电求助信号 | |||
English thesaurus | |||
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distress call | |||
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An expression meaning "I am in distress." It is the international radiotelephony distress signal. Preferably spoken three times, it indicates imminent and grave danger and means that immediate assistance is requested. |
mayday : 1 phrase in 1 subject |
Automobiles | 1 |