sos

• 国际莫尔斯电码中使用的求救信号，通常表示需要立即援助或救援。也可泛指紧急求助的呼救。

An internationally recognized distress signal in radio code, typically used to indicate a need for immediate help or assistance.

专有名词

1. B1formal

   An internationally recognized Morse code distress signal (three dots, three dashes, three dots) used in emergencies.

   求救信号

   • The ship sent out an SOS after hitting the iceberg.
   • The pilot transmitted an SOS when the engine failed.
   • Rescue teams responded immediately to the SOS call.

   同义词distress calldistress signalmayday

2. Urgent plea for helpB2informal

   A figurative expression used to indicate a desperate need for assistance.

   紧急求助

   • The email was an SOS for more volunteers.
   • Her message was an SOS for financial support.
   • The community sent out an SOS for food and supplies.

   同义词alarmdistress callmayday