钙能与水产生化学反应但不如钠以及钾那么剧烈。
Calcium reacts with water but less violently than sodium and potassium do.
那么，当流动的血液中钙含量过低，一个叫做甲状旁腺的发信号装置就会激活一个流程，致使骨骼中的钙流失到血液里。
Then, when the blood runs low on calcium, a signaling device called the parathyroid gland can activate a process by which calcium is taken from the skeleton and put back into the blood.
如果你有乳糖不适症，那么多吃些豆制品(特别是那些含有苹果酸钙的)，豆制品是在烹饪中是个很好的代替品，它们也同样包含了大量的蛋白质、维生素d和钙。
If you're lactose intolerant, fortified soy products — particularly those with calcium malate — are a fine substitute in cooking and often contain similar amounts of protein, vitamin d, and calcium.
那么，磷酸氢钙分离，从固体手段迁。
Then, DCP was separated from the solid by means of decantation.
但不是那么容易就能生产厚的蛋壳的，这需要比它们从食物中能取的还要多的钙。
But it isn't easy to produce thick egg shells. It requires a lot of calcium, more than female penguins normally get in their diets.
但不是那么容易就能生产厚的蛋壳的，这需要比它们从食物中能取的还要多的钙。
But it isn't easy to produce thick egg shells. It requires a lot of calcium, more than female penguins normally get in their diets.
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