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;
例句:
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The emergency signal SOS has no literal meaning.
呼救信号SOS在字面上没有任何意义.
来自《简明英汉词典》
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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。
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to send an SOS
发出紧急呼救信号
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Sos and I both try to ski at least once with each group.
来自THETIMES
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The Titanic was one of the first ships in history to issue an SOS.
来自NEWYORKER
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Months earlier he had raised the alarm in an SOS to the United Nations.
来自CNN