calcium
['kælsiəm]
n.钙
例句与用法：
A smooth, lustrous, variously colored deposit, chiefly calcium carbonate, formed around a grain of sand or other foreign matter in the shells of certain mollusks and valued as a gem.
珍珠在几种软体动物的贝壳中，围绕着一粒沙子或其他外来物质形成的一种光滑、有色泽、具有不同颜色且主要是碳酸钙的沉积物，被珍视为宝石
I have a slight calcium deficiency.
我有点缺钙。
Calcium is beneficial to our bones.
钙对我们的骨骼有益。
We need some calcium everyday.
我们每天需要些钙。
词形变化：
简写符号: Ca |
详细释义：
n.
【化】钙[U]
You need calcium in your food to grow strong, healthy bones.
为了骨骼长得坚固和健康, 你的食物里需要有钙。