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Calcium
鈣
Calcium is a kind of mineral.
鈣是一種礦物.
It is found in rocks, sea water and soil.
它常見于巖石、海水和土壤中。
Calcium is important for human health.
鈣對人體健康很重要。
Then do we have to eat rocks or soil to consume Calcium?
那么，我們必須吃石頭或土壤來消耗鈣嗎？
Of course not. Calcium is also found in many kinds of food.
當然不是。許多種類的食物中也含有鈣。
Usually, dairy products like milk, cheese and yogurt have a lot of Calcium.
通常，牛奶、奶酪和酸奶等乳制品含有大量的鈣。
Orange juice and soy milk are also great sources.
橙汁和豆奶也是很好的來源。
Then why is Calcium important for human health?
那么為什么鈣對人體健康如此重要呢？
People especially children need to eat a certain amount of Calcium every day, because our bones need Calcium.
人們特別是兒童需要每天攝入一定量的鈣，因為我們的骨頭需要它。
Without Calcium, bones don't grow properly.
沒有鈣，骨骼不能正常生長。
