For instance, plastics have a known weakness to ultraviolet rays from the sun, and so long exposure might represent an issue.
例如，塑料有一个缺陷，不能长期暴露于太阳紫外线的照射中。
Recent studies conducted by doctors show that excessive exposure to the sun "s rays causes skin cancer."
最近医生所做的研究表明：过度暴露在阳光下会致癌。
Rays of hope: Regular exposure to the sun can help ward off cancer.
阳光带来希望：定期晒晒太阳可避免患上癌症。
Significantly lighten the appearance of pigmented skin caused from daily exposure to the sun damaging rays and environmental conditions.
大大减轻日常暴露于有害太阳射线和环境条件下的肌肤出现的色素沉着。
Significantly lighten the appearance of pigmented skin caused from daily exposure to the sun damaging rays and environmental conditions.
大大减轻日常暴露于有害太阳射线和环境条件下的肌肤出现的色素沉着。
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