Survivors of the wreck were plucked to safety by a helicopter.
沉船的幸存者被直升机营救脱险。
The four men were pulled to safety by the crew of a sea king helicopter.
这4个人被一架海王起重机得机组人没拉到了安全地点。
Safety and Stability Analysis of A Helicopter with an External Slung Load.
直升机吊挂运输中的安全稳定分析
The shipboard effect of helicopter has adverse effect on the flight safety.
直升机得舰面效应影响舰载直升机得飞行安全。
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