Overexposure to ultraviolet ( UV) radiation, such as from sunlight, tanning booths, or sunlamps.

过度暴露于紫外线（UV）辐射下，如阳光，晒黑机，或日光灯。

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The massive loss of protection against the sun's ultraviolet (UV) radiation would likely force humans into a vampire-style existence of staying indoors during daylight hours.

缺少了臭氧层对太阳紫外线辐射的抵挡，人类将有可能被迫过起“吸血鬼”般的生活——白天只能躲在屋子里。

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These are prime hours for exposure to skin-damaging ultraviolet (UV) radiation from the sun, even on overcast days.

这段时间是皮肤受到太阳紫外线照射伤害的主要时段，即使是阴天也是如此。

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The result is a material that is not only waterproof but is able to block out UV radiation from the sun to such an extent that it would rate a Ultraviolet Protection Factor (UPF) of 101.15 if the chart went that high.

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