显然，太阳热使得封闭车厢里的压力升高。
The solar heat obviously pressurized the car's closed cabin.
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.
公共场所吸烟的人太多！特别是电梯里，宾馆和封闭的车厢里！
The worst is in elevators, restaurants and closed up train cars.
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