The calcium carbonate settles to the sea floor.

碳酸钙沉入海底。

Among them, calcium carbonate washed away by continuously running water.

其中的碳酸钙会被流水带走。

Coral is made up of small colonial animals, with calcium carbonate skeletons.

珊瑚是小型珊瑚虫及其碳酸钙骨骼聚集而成的。

The whiter ones are more rich in calcium carbonate which is indicative of forams.

白色的部分富含更多的碳酸钙，说明这里有孔虫。

Health departments often assess hardness by measuring the milligrams of calcium carbonate per liter.

卫生部门通常通过测量每升碳酸钙的毫克来评估硬度。

Over time, these polyps generate rock-like skeletons made of calcium carbonate.

逐渐地，这些珊瑚虫长出形似，碳酸钙组成的骨。

And one of those minerals, calcium carbonate, happens to be a very useful building material.

其中一，碳酸钙，恰好是一非常有用的建筑材料。

That activity in turn causes calcium carbonate to precipitate, an event known as a whiting.

这一过程反过来也引发了被称为whiting反应的碳酸钙沉淀形成。

Increased acidification will make it harder for marine organisms to grow and sustain calcium carbonate skeletons.

酸化的增加将使海洋生更难生长和维持碳酸钙骨。

And the deep sea is under saturated in calcium carbonate, so it literally dissolved all the bones.

深海的碳酸钙饱和不足，所以它溶解了所有的骨。

Moreover, as water travels through the ground it dissolves and picks up minerals, particularly calcium carbonate.

此外，当水穿过地面时，它会溶解并吸收质，尤其是碳酸钙。

This " dissolving depth" depends on the concentration of calcium and carbonate already in seawater.

碳酸钙溶解的深度取决于海水里钙离子和碳酸根离子的浓度。

Pearls contain a mixture of protein and calcium carbonate secreted by certain types of molluscs.

珍珠是某些类型的软体动分泌的碳酸钙同蛋白质一起构成的混合。

Every summer, as the surface waters warm, flakes of calcium carbonate precipitate out and drift to the bottom.

每年夏天，随着表层海水变暖，碳酸钙薄片沉淀出来，沉向海底。

And it's laid down to gather together calcium for calcium-carbonate eggshells that they are making during ovulation.

它储存和积累钙元素，用于形成排卵期间碳酸钙构成的蛋壳。

Also during that period, creatures with hard body parts such as shells made of calcium carbonate appeared.

同样是在那个时期，出现了具有坚硬的身体部位的生，比如碳酸钙生成的贝壳。

Enough of such cyanobacterial work over enough time and eventually you get the Bahamas, built out of calcium carbonate.

需要足够多的这蓝细菌在长时间里共同参与，最终才会有这个用碳酸钙建造起来的巴哈马群岛。

Normal concrete is bound with Portland cement, which is made by roasting a mixture that includes limestone (calcium carbonate).

普通的混凝土与硅酸盐水泥结合在一起，硅酸盐水泥是通过焙烧含有灰的（碳酸钙）混合制成。

It's the calcium carbonating in his stool.

这是他粪便中的碳酸钙。

Which is calcium carbonate that is present throughout the entire river system.

这是存在于整个河流系统中的碳酸钙。