即便是今天，敞篷车用于抬升和降低车篷的机械装置以及车体的加固装置仍然使它们比封闭式车厢的轿车车体更沉重，车内空间更狭小，安全系数更低，工艺更复杂。
Even today, the mechanism used to raise and lower the top, along with body reinforcements, make them heavier, less capacious, less secure, and trickier to engineer than their fixed-roof counterparts.
火车上有一节载人的车厢，或者，也可以免费在装矿的敞篷车皮上搭便车。
It has one passenger car, or you can ride for free in the coal trucks.
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