新奇事件簿 紫外线可预防癌症

Scientists have told us for many years that the sun can harm our health. Researchers have produced many studies that link exposure¹ to the sun to cancer. Doctors continually² warn us about the dangers of ultraviolet³ (UV) rays. Well, all of this might now change. Doctors and scientists may soon be telling us the opposite. New research suggests that sunshine is necessary for our bodies. Our skin absorbs the UV rays and produces vitamin D, also known as the “sunshine vitamin”.

多年以来，科学家一直告诫民众太阳光有害健康。据研究人员多方研究发现，紫外线照射与癌症有关。医生不断告诫民众紫外线危害。但一切将就此发生改变。医学专家将正话反说。新研究表明，太阳光为人体所必需。皮肤通过吸收紫外线产生维他命D，它也被人们称之为“阳光维生素”。

Dr. Edward Giovannucci of Harvard University says that vitamin D contains many anti-cancer benefits. He believes vitamin D might help prevent 30 more deaths than those caused by skin cancer. It might now be time to put the sunscreen away. Doctors may soon recommend we spend fifteen minutes a day in direct sunlight. They say this will allow our skin to produce the vitamin D we need. Researchers highlight⁴ the fact that there are fewer people with cancer in sunnier parts of the world.

哈弗大学博士爱德华·乔万努奇认为，维他命D富含抗癌成分。他认为比起皮肤癌患者，维他命也能挽救30多条患者生命。收起防晒霜。医生推荐日照时间将为15分钟。通过太阳光，皮肤可产生人体所需维他命D。研究人员强调称，癌症患者在日照充足国家较少。

1 exposure   

n.暴露，面临；揭露，揭发；曝光

参考例句：

• After only a short exposure to sunlight he began to turn red.他在阳光下只晒了一会儿，皮肤就开始变红了。
• I threatened them with public exposure.我扬言要公开揭发他们。

2 continually   

adv.不间断地，不停地；多次重复地

参考例句：

• The other kids continually taunted him about his size.其他孩子不断地耻笑他的个头儿。
• The US is continually building up its armed forces.美军正持续加强它的三军。

3 ultraviolet   

adj.紫外线的；n.紫外线

参考例句：

• It's called ultraviolet rays.它被叫做紫外线。
• The sun's ultraviolet rays are responsible for both tanning and burning.阳光中的紫外线是皮肤晒黑和灼伤的根源。

4 highlight   

n.加亮区；v.加亮，强调；[计算机]醒目

参考例句：

• Her performance was the highlight of the show.她的表演是那场演出中最精彩的部分。
• The highlight of this term is the school trip to Austria.这学期最重要的活动就是去奥地利的校外旅行。