The crew sent out a distress signal, but there was no explanation of the problem.

机组人员发出了求救信号，但没有对问题进行解释。

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The direct cause is a chemical distress signal produced in skin that is damaged by another hazard of modern life: eczema.

直接的原因是皮肤里有一个对化学品产生痛苦的信号，现代生活的另一个威胁——哮喘会伤害皮肤。

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Conway flashed a distress signal with his pocket light.

康维拿袖珍手电打出了遇险信号。

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"The Ady Gil then put out a distress signal, a mayday signal, which was ignored and not acknowledged by the Japanese and then they sped away from the scene of this incident."

VOA: standard.2010.01.06

Another is to ensure that there are clear guidelines on what constitutes a distress signal and a vessel in distress.

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In 1906, SOS was established as an international distress signal at the Berlin Radio Conference.

CNN: Friday,

Searches for the Chandlers began on Friday after they sent a distress signal.

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