Ordered to fire a Gun as a Signal of Distress.

船长就下令放一枪，作为求救的信号。

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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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"Red flares are a distress signal but any members of the public seeing this near Greenock around 8pm should be aware what is going on, " he said.

BBC: Red flare protest over Clyde Coastguard closure plan

Their ongoing partnership with credit counselors would be invigorated and, in fact, newsworthy, as it would signal a new phase of commitment by major financial institutions to the relief of current distress as well as renewed support for financial literacy programs that help prevent future meltdowns.

FORBES: Credit Counselors Face Challenges of Their Own -- Just When They're Needed Most

It can only send a distress signal which is then bounced off a satellite and on to one of a several rescue coordination centres.

BBC: NEWS | UK | England | Bristol/Somerset | Stricken rowers rescued by ship