所谓硬水，就是含矿物质的水，主要是钙盐、镁盐等。
Hard as the water containing minerals, which is mainly calcium salt, magnesium salts, etc.
《内科医学档案期刊》中的一个报导说道，大约有41%的人服用维他命丸的时间有15年了，且大多是服用含矿物质的复合维生素。
Some 41 per cent took vitamin pills for a total of 15 years - mostly multi-vitamins with minerals, says a report in the Archives of Internal Medicine journal.
使用含氟牙膏是一种能够确保你牙齿能够得到这种利牙矿物质好处的重要途径。
Using fluoride toothpaste is an important way to ensure that your teeth are reaping the benefits of this dental-friendly mineral.
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