Suncream may actually block the body's natural defence against harmful UV rays, a surprising new study has found.

据英国《每日邮报》11月4日报道，一项令人惊奇的新研究发现防晒霜实际上可能会阻碍人体对紫外线的自我防御。

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In theory, planetary dust could block out UV rays, but the dust was bound up in the creation of those young planets.

理论上行星星尘可以把紫外线挡在外面，可在这些年轻行星的形成过程中，星尘是挤成一团的。

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To protect your eyes, it is important to wear sunglasses that block out harmful UV light.

为了保护我们的眼睛，戴上太阳眼镜阻挡紫外线伤害是很重要的。

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Window coatings that block UV rays also give the option of natural light while minimizing its clothing-fading side effects.

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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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The tinted visor is shatter resistant and would block out the UV rays.

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