They can change from clear to dark and black again when people touch them.

人们触摸时，它们会从透明变成深色，再变成黑色。

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Part of this change is down to the albedo effect, with white, reflective ice replaced by dark water, which absorbs more of the sun's heat.

这种变化趋势的发生部分是因为黑色的水与白色的冰相比，反射效应低，从而吸收了更多来自太阳的热量。

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Bad boys exhibit dark triad traits and their behaviour, according to one theory, is genetic, meaning they are unlikely to change their ways.

坏男孩身上的“黑暗性格”很明显，而且根据某一类理论，他们的行为是带有遗传性的，意味着他们不可能改变自己的处事方式。

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Measuring any change in dark energy requires creative thinking, which is where the clusters come in.

ECONOMIST: Cosmology

There is no fumbling with wallets in the dark, no waiting for change and no need for lightning-quick mental math skills for calculating gratuity.

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And they want to be able to change the atmosphere after dark.

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