SOS
noun /ˌes əʊ ˈes/
/ˌes əʊ ˈes/
[singular]- a signal or message that a ship or plane sends when it needs help immediately
（船舶或飞机发出的）紧急呼救信号 - to send an SOS
发出紧急呼救信号 - an SOS message
紧急呼救信号
- to send an SOS
- a serious request for immediate help
紧急求助的请求 - We've received an SOS from the area asking for food parcels.
我们收到来自那一地区的紧急求援信息，他们急需食物包。
- We've received an SOS from the area asking for food parcels.
词源early 20th cent.: letters chosen as being easily transmitted and recognized in Morse code; by folk etymology an abbreviation of save our souls.