sos
abbr.si opus sit (Latin=when needed) (拉丁语)必要时; silicon-on-sapphire 硅-蓝宝石(技术); save our savings 节约我们的储蓄; save our streets 保留我们的街道;
易混淆单词:SOSSOsSoSSossOS
1.N-SING紧急呼救信号An SOS is a signal which indicates to other people that you are in danger and need help quickly.
The ferry did not even have time to send out an SOS.
渡船甚至连发出紧急呼救信号的时间都没有。
SOS指国际通用紧急求救信号