释义 |
signal of distress 基本Thesaurus 遇难信号,船只失事信号 as in.distress signal 同义词 warning signalMayday,SOS,alarm,burglar alarm,call for help,danger signal,fire alarm,flare,notice to mariners distress signalnoun internationally recognized signal requesting help Mayday,SOS,alarm,burglar alarm,call for help,danger signal,fire alarm,flare,notice to mariners,warning signal |