跑步是燃烧多余热量的有效办法。

Running is an efficient way to burn off excess calories.

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热量必须定位在铰链上，才可以更快更有效的折叠。

The heat has to be localized to the hinge in order to have fast and effective folding.

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第二，热量必须定位在铰链上，才可以更快更有效的进行折叠。

Second, the heat has to be localized to the hinge in order to have fast and effective folding.

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