This spongy tissue serves as a source of calcium for eggshell formation.(这种海绵状组织是形成蛋壳的钙质来源。)
Calcium is only part of the story, of course.(当然，钙只是这个故事的一部分。)
Vitamin D, or calciferol, is another fat soluble steroid vitamin which functions to stimulate calcium uptake from the gut and its deposition in bone.(维生素D，或钙醇，是另一种脂溶性类固醇维生素，其功能是促进钙从肠道吸收并沉积在骨头中。)
Those dinosaurs on the nests were probably adult males who wouldn't have needed calcium for making eggshells.(巢里的那些恐龙可能是成年雄性，不会需要用来制造蛋壳的钙。)
This paper introduces the preparation and quality tests of calcium chlorate.(本文介绍了氯酸钙和氯酸镁合成和性质检验的方法。)
Calcium is found most abundantly in milk.(奶含钙最丰富。)
Milk and dairy products are important sources of calcium. They include cheese, yogurt, fromage frais, etc.(牛奶和乳制品是钙的重要来源。它们包括芝士，酸奶，新鲜软干酪等等。)
All the original calcium had dissolved away.(所有原始钙都被破坏了。)
So-called serpentine soils, for example, are deficient in calcium, and only plants able to tolerate low levels of this mineral can survive.(例如，所谓的蛇形土壤缺乏钙，只有对低水平的这种矿物质耐受的植物才能生存。)
For example, G10 garnets, a type of garnet typically found in diamond-rich pipes, are lower in calcium and higher in chrome than garnets from barren pipes.(例如，G10石榴石，一种通常发现于富含钻石的管道中的石榴石，与无钻石管道中的石榴石相比，其钙含量较低，铬含量较高。)
