... 闪光信号flashing light signal;flash signal;flashing signal 音响信号acoustic signal;whistle signal 手信号hand signal ...
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Signal Whistle 德军的信号口哨 ; 信号汽笛 ; 信号风笛 ; 信号笛
THE SIGNAL WHISTLE IN USE 信号口哨的使用
single signal whistle 单信号哨叫
signal l whistle 信号汽笛
Blow your whistle and signal for the end of the match: the away team have won.
你可以鸣哨结束比赛：客队获胜。
The fighting starts when a signal such as an air horn or whistle blows, and can last anywhere from a few minutes to a few hours.
当用号角或口哨发出信号时，大战就可以开始了，在任何位置都行，能持续几分钟到几个小时。
If possible, use a whistle to signal rescuers.
如果可能的话，请吹口哨对救援人员发出信号。
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