In the punishing climate of Iraq and Afghanistan, moreover, soldiers' accommodation must be kept cool in hot weather, and warm in the cold.

在伊拉克和阿富汗的恶劣气候中，燃料需求更多，士兵们的住地天热时需要降温，天冷时则需要取暖。

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Here four seasons, warm and windy spring, summer, hot summer, cool autumn and winter cold.

这里四季分明，春季温暖多风，夏季酷暑炎热，秋季凉爽，冬季寒冷。

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The controlled ventilation moves the outside air over an earth register, and thus enables it to warm up the cold outside air but also to cool down the hot air.

通过控制通风系统使外部空气在一个固定装置中移动，从而使它加热了寒冷的室外空气并且冷却热空气。

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While in cold climates, tea is used to warm up, hot tea can also be used to cool down, such as Moroccan mint tea, a brew of green tea leaves mixed with mint leaves.

BBC: The world in six cups