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虽然传统的直升机便于在多山地区及缺乏简易机场的地方作战,但无法携带足够的燃料,不能从远距离的机场运输货物,或在空中长
Although conventional helicopters are easy to operate in mountainous areas and where there is no airstrip, they can not carry enough fuel, can not transport goods from long-haul airports, or fly long