Hydrogen cars have so far enjoyed little real-world success, due in part to a lack of charging infrastructure, cost and - more recently - a political swing towards electric cars.

在现实世界里，氢动力汽车迄今为止尚未获得成功，其部分原因是缺乏续加燃料的基础设施、成本过高以及最近偏好电动车的政策摆向。

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In addition, capabilities like the multi-document interface (MDI) — called JInternalFrame in Swing — are not part of the framework but are left to the underlying window manager.

此外，多文件接口(multi - document interface, MDI)——在Swing中称为JInternal Frame——等功能不是框架的一部分，它位于基本的窗口管理器的左侧。

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The back is an important part of the golf swing because we use a lot of bending to create torque and power.

背部在挥杆时起著重要作用，因为我们要经常弯曲背部来进行扭转和发力。

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Dr Mark Smith, who is part of the Golf Education and Research Group at the University of Lincoln, England, believes that, with development, the swing could become part of the range of shots used by the modern golfer.

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Might there be a special focus and concentration on swing states that are part of the 2012 map?

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Now if you can watch the market a little bit more closely, I am swing trading for the most part.

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