In rescue missions, the helicopter crew drop radio-beacons to mark the distress area and deliver rescue teams to aid and recover the casualties.

在救援中，机组人员可以空投无线电信标标定出救援区域，以便救援人员进行搜索。

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This paper discusses the early distress of cement concrete pavement in freeway's charge square and service area.

本文探讨了高速公路水泥混凝土路面收费广场和服务区的早期损坏问题。

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Vietnam south of Ho Chi Minh is far more vulnerable, and for a broader area, yet is not in such distress.

越南南部的胡志明市更为脆弱，其面积更广，却没有这样的苦难。

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At present, warships from a number of countries patrol an international maritime corridor, escorting some merchant ships and responding to distress calls in the area.

CNN: Pirates strike again off Somalia; ship from Yemen seized

The other area of concentrated distress is subprime mortgages, which increased their share of the American mortgage market from 7% in 2001 to over 20% in 2006.

ECONOMIST: Home ownership

Vessels in the area failed to respond to distress calls, and a "vacuum of responsibility" meant no one assumed a duty to help the stricken boat as it drifted in the Mediterranean Sea, the report said.

CNN: Report: NATO shares blame over Libya migrant boat deaths