我们可能会在高温下晒黑，或者感到尴尬时脸红，但是想象一下，如果你的皮肤颜色完全随着环境的变化而改变呢?

We might tan in the heat, or go red if we get embarrassed, but imagine if the color of your skin completely changed with your environment?

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很多人节食失败的原因是他们对节食一窍不通，一下子完全改变了饮食习惯。

The reason many people fail on diets is that they jump in at the deep end, making a complete change to their eating habits.

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