The ultra violet (UV) rays that cause suntans also cause a kind of chemical, called endorphins, to be released into the blood.

造成皮肤晒黑的紫外线，也会造成一种称为脑内啡的化学物质被释放进血液中。

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Uv varnish Varnishes which dried immediately by exposure to ultra-violet light.

紫外线光油在紫外光照射下，即时干燥的光油。

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Ultra-violet absorbance optical detector (UV detector) is most used in high performance liquid chromatography (HPLC).

紫外吸收光学检测器是高效液相色谱中最常用的检测器。

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But the increased ultra-violet (UV) solar radiation which the damaged ozone allows through to the surface of the earth is a threat to all living things.

BBC: By Environment Correspondent Alex Kirby