Powerplants - that is, jet engines for airplanes, turbines for ships - are some of the most complex, expensive and potentially troublesome components of any weapon system.

动力装置——飞机的喷气发动机，船只的涡轮发动机——是所有武器系统当中最复杂、最昂贵、最容易出现问题的部件。

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Because radar exploration is still the primary way in the most country's aerial defense system, besides of the airplanes, it's emergency for missile to shelter to radar exploration.

由于目前各国的防空体系仍以雷达探测为主，除了飞机，导弹对雷达探测进行隐身也是当务之急。

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For example, private airplanes and yachts are excluded from most of these reports, which tend to focus more on high-end fashion, accessories, watches, jewelry, writing instruments, fine wine, etc.

例如，上述大多数报告都没有包括私人飞机和游艇在内，重点多放在高级时装、佩饰、手表、珠宝、书写工具和名酒等产品上。

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The speed at which things can go wrong and the margin for error correction in a car is radically different from airplanes under most conditions, and the cross-cumulative effects of contextual disturbances means that car companies cannot really simulate everything in advance.

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