The same effect was found among those who held a cool pack to their forehead, whereas those who held a warm or room-temperature pack yawned while watching the video.

将冰袋敷在前额上也能起到类似的效果，而在观看视频时用暖水袋或室温水袋敷在额头上的人却无法避免打呵欠。

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The Italian hiker next to me had a heavy pack and was sweating profusely in the cool morning.

我身边的意大利同伴背着一个沉重的背包，在这个凉爽的清晨竟然还满头大汗。

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That's the same battery burning your lap when you use your laptop computer-a primary reason Ford USES liquid to cool the pack.

这就是你用笔记本电脑时用到的是同样的电池，主要原因是，福特汽车用液体冷却电池组。

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You never know when you are going to need it and a great scented candle, a cool pack of playing cards or a great book are perfect gifts for a dinner party hostess or a weekend hostess.

FORBES: 6 Ways to Make the Most of Your Summer Weekend

Experiments by Andrew Gallup at Princeton University, his father Gordon Gallup and a colleague found that yawning is suppressed by a cool pack strapped to the forehead or by summer temperatures that are higher then body temperature, and that therefore the purpose of yawning may be to cool the brain by inhaling air.

WSJ: Matt Ridley on Why You Just Yawned | Mind & Matter

My A2B Hybrid 24 looked cool, despite the lithium battery pack hanging above its rear wheel.

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