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10支香烟可破坏25～100mg维生素C。 含有合成维生素D的牛奶会夺取人体中的镁。 住在充满污烟的都市的人比住在乡下的人获取维生素D的量要少。因为空气中的烟把太阳的紫外线挡住了。
10 cigarettes can destroy 25 ~ 100mg vitamin C. Milk containing synthetic vitamin D can sequester magnesium in the body. People who live in smoky cities take less vitamin D than those who live in the country. Because the smoke in the air blocked the sun’s ultraviolet rays.