Excessive sunlight can lead to freckles or other skin changes, some of which can be detrimental.
过多的阳光会导致雀斑或其他皮肤的变化，其中一些可以是有害的。
Famous for changing the color of their skin, chameleons are more like mood rings, with their color changes reflecting mood, temperature, light, and other stimuli.
变色龙以他们善变的皮肤出名，他们能根据自身的情绪、环境温度、光线和其他刺激因素来改变他们的肤色。
Visible changes in the skin including wrinkling, sagging and erythema were observed every other week.
用肉眼观察的方法，隔周一次观察皮肤的外观状态和皱纹数；
Visible changes in the skin including wrinkling, sagging and erythema were observed every other week.
用肉眼观察的方法，隔周一次观察皮肤的外观状态和皱纹数；
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