When civilian flights over the United States stopped in the wake of the terrorist attacks of September 2001, the lack of sulphur-laden contrails led to a perceptible rise in temperature.

2001年9月恐怖袭击后经过美国的民航因为缺少含硫的飞行云而导致了机内乘客体温明显上升。

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The jet leaves contrails in its wake due to the temperature difference between the hot engine exhaust and the cold air.

这架喷气式飞机飞行时留下的凝结尾是由于其发动机与冷空气之间的温差造成的。

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These rhythms include blood pressure, body temperature, hormone level, the number of immune cells in blood, and the sleep wake cycle.

这些节律包括血压、体温、激素水平、血中免疫细胞的数量、睡眠觉醒周期循环等。

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The idea of using routines to control symptoms grows out of all sorts of data showing that our daily bodily rhythms of sleep and wake, as well as body temperature and hormones, markedly affect our moods.

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From colored lighting and ambient music to digital art (on your TV), temperature, window blinds and specially designed mood-enhanced wake-up calls (like "wake me gently" or "wake me wildly"), you can direct the room's whole look and feel, all without having to get out of bed.

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