Skin changes, such as thickening or easy bruising.

皮肤改变，如皮肤变厚，易于收挫伤。

youdao

Excessive UV exposure results in a number of chronic skin changes.

过度暴露于紫外线辐射可导致多种皮肤慢性病变。

youdao

Ultraviolet radiation may result in skin changes, such as erythema, photoaging.

紫外线辐射可造成皮肤损伤，引起皮肤出现红斑、光老化等。

youdao

Ultraviolet light from the sun changes a substance in the skin into vitamin D.

VOA: special.2009.04.21

The signs include a skin growth that changes in size,color, thickness or texture.

VOA: special.2010.07.06

Knowing what your skin looks like will help you recognize any changes.

VOA: special.2010.07.06

Interestingly, resting a laptop on your thigh can generate temperatures up to 44 degrees Fahrenheit- enough to cause discoloration and potentially permanent skin changes.

FORBES: Some Like It Hot

"I have to wear sleeves and carry an umbrella, " said Lee Thomas, who wrote a memoir called "Turning White, " which discusses his physical and mental struggles as an African-American man whose skin changes because of vitiligo.

CNN: Actress: Michael Jackson's glove was to hide skin problem

Similarly, when an octopus changes skin color in self-defense, such as by mimicking a poisonous sea snake, the decision may come not from central command but from the skin itself.

WSJ: The Brains of the Animal Kingdom