词典释义：
释义
n.
an act of transporting supplies by aircraft, typically in a blockade or other emergency
（多指在封锁或其他紧急情况下的）空运
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a massive airlift of food ,blankets ,and medical supplies .食品、毯子和医疗补给品的大规模空运。
v.
transport (troops or supplies) by aircraft, typically when transportation by land is difficult
（尤指当陆地运输有困难时）空运（部队，补给品）
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helicopters were employed to airlift the troops out of danger .动用直升机将部队撤出危险区。