You will gain weight, and as your body becomes heavier, you'll start to notice changes in its overall shape.

你的体重会增加，而且在你的体重增加的同时，你会注意到你整体的改变。

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By focusing on this nonvarying piece of anatomy, you'll be less tricked by changes in hair length or color, clothing, and even body shape and height.

只要留意这一不变的特征，你很少会被头发长短与颜色、着装甚至是体型及身高的等的变化而蒙骗。

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Once the first changes had happened, the rest of the body had to alter to accommodate them, and a new shape emerged.

ECONOMIST: How new groups of creatures emerge