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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In hot or warm days, tea helps to dispel the heat and brings on an instant cool with a feeling of relaxation.

在天热的时候，茶可以驱热，立刻会带来一种凉爽而轻松的感觉。

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The process requires special metals that can withstand a huge temperature differential - the side facing the hot gases stays warm, and the other side must stay cool.

这个过程需要一种特殊的金属，它能经受住巨大的温差——一边要接触高温气体而被加热，而另一边则必须保持低温。

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By tapping that temperature, Fort Knox can keep cool on hot summer days and warm up in the dead of winter.

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"My project involved a method for treating leather so that it stayed warm to the touch in a hot environment and warm to the touch in a cool environment, " he said.

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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.

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