During outdoor activities, they should be protected from high UV exposure as above, and babies should always remain in the shade.

在进行户外活动时，应如上所述，保护他们避免紫外线高度暴露。婴儿应始终呆在阴凉处。

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Cloud cover: UV radiation levels are highest under cloudless skies but even with cloud cover, they can be high.

云量：在晴朗无云的天空，紫外线辐射水平最高。但是，即使有云层，紫外线辐射水平也可以很高。

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Weathering in summer, the UV light intensity and high temperature speed up the evaporation rate of oil, which is beneficial to weathering.

夏季风化时，高辐射强度的紫外线光照和高温加快溢油蒸发速率，有利于风化进行。

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So, ideally what we did see was, in fact, it does have enough energy with the UV lamp, it wasn't a dramatic shift you saw because we didn't start very high and then it went to that stuck point.

所以，理想上我们所看到的，事实上，紫外灯没有足够的能力，因为我们没有从非常高开始,所以它没有一个特别显著的移动,然后它又回到了黏着点。

麻省理工公开课 - 化学原理课程节选

High pollen counts and - as you'd expect - high UV levels will be a feature on most days.

BBC: Glastonbury Festival 2010 weather forecast

Writing about his work earlier this year in Virology Journal, Rice shows how chickenpox is much less common in parts of the world with high levels of UV rays compared with places where the levels are low, and why in temperate zones, the disease peaks in winter and spring, when UV rays are at their lowest.

FORBES: Sun's UV Rays May Prevent Chickenpox

An article in the Journal of Geophysical Research, published by the American Geophysical Union, says the Arctic damage threatens to "allow the penetration of enhanced UV radiation at northern mid-high latitudes".

BBC: By Environment Correspondent Alex Kirby