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Britons should spend up to 20 minutes in the sun every day to protect their bones, according to MPs. 英国有关机构向国名提出了这样一个建议：每天花二十分钟晒晒太阳，这样有益于保护骨骼。 There are fears that rising numbers of elderly people are suffering fractures because their bones have become weak due to a lack of vitamin D. 关于老年人骨骼健康的担忧日趋加重，由于缺乏维生素D，他们的骨骼变得越来越脆弱，这样很容易诱发出现骨折的情况。 | 
