skin exposure due to severe burns after the period.

皮肤由于经过暴晒严重灼伤时期。

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For protection during outbreaks of chikungunya, clothing which minimizes skin exposure to the day-biting vectors is advised.

在基孔肯雅热流行期间，建议着装时要尽量减少可遭白天叮咬媒介叮咬的暴露皮肤。

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To investigate levels of skin exposure, the researchers took radioactively labelled BPA and observed the movement of radioactivity through pig ear skin - a widely used model for human skin.

为了调查皮肤对双酚a的吸收水平，研究者用放射性同位素对双酚a做了标志，观察放射性标志在猪耳朵皮肤内的活动——这是种广泛应用的代替人类皮肤的实验模式。

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Vitamin D is manufactured in the skin on exposure to sunlight and people make significantly less in area where there is less daylight.

BBC: Bowel disease linked to vitamin

Vitamin D is made in the skin after sun exposure and can be taken in dietary supplements.

BBC: Study finds obesity can 'lead to lack of vitamin D'

In addition, vitamin D can be produced by the skin with sunlight exposure, but this ability decreases with age and varies considerably by geography, time of day or year, skin melanin content (darker skin produces less vitamin D) and sunscreen use.

CNN: How much vitamin D should someone over 55 take?