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.
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。
The engineer explained by the square the working mechanism of the machine.
工程师精确地解释了这个机器的工作原理。
Robin Li was an engineer with a patent on search mechanism, and he wanted to build a Chinese search engine.
Robin Li 是一名在搜索技术方面拥有一项专利的工程师，他想建立一家中文搜索引擎。
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