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托福
托福词汇

calcium

TPO词频:16次
calc石头
ium名词
石头,碳酸钙→钙

['kælsɪəm]


【释义】

基本释义 n. [化学] 钙

常考释义 n.钙

n. [化学] 钙

【语块】

calcium carbonate

calcium salt

calcium carbide

【TPO例句】

1. As evaporation continued, the remaining brine (salt water) became so dense that the calcium sulfate of the hard layer was precipitated. (TPO7-P1)

随着蒸发的继续进行,盐水浓度太高以致硬地层的硫酸钙发生沉淀。

2. The fossils buried in Pleistocene and earlier ocean sediments were of foraminifera—small, single-celled marine organisms that secrete shells of calcium carbonate, or calcite. (TPO19-P3)

埋在更新世时期的化石和更早的海洋沉积物是有孔虫类,它们是一种小的单细胞海洋生物,会分泌碳酸钙壳或者方解石。

3. In many marine creatures, however, the skeleton is composed of a mineral variety of calcium carbonate called aragonite. (TPO20-P3)

不过,很多海洋生物的骨骼是由称为霰石的各式碳酸钙矿物质组成的。

4. They are composed of minerals uncommon on Earth,all rich in calcium, aluminum, and titanium, the most refractory (resistant to melting) of the major elements in the nebula.(TPO22-P3)

它们是由地球上罕见的矿物质组成的,富含钙、铝以及在星云中最耐高温的(耐熔化的)主要元素钛。

5. Other researchers speculate that sauropods ingested these stones as a source of some the minerals they needed, such as calcium. (TPO27-L3)

其他的研究人员推测蜥脚类动物吞食这些石头,是将它们作为他们所需矿物质的来源,比如说钙。

6. It can be washed out when it rains or it can be released to the atmosphere, whereas phosphorus combines with calcium and iron, and can be preserved in the soil for thousands of years.(TPO31-L4)

下雨的时候它会被冲走,或者也会被释放到大气中去,而磷可以和钙和铁结合,并且可以被保存在土壤中达上千年。

7. For example, savanna soils, like many rain forest soils, are typically oxisols (dominated by certain oxide minerals) and ultisols (soils containing no calcium carbonate), with a high acidity and notably low concentrations of such minerals as phosphorus, calcium, magnesium, and potassium, while aluminum levels are high. (TPO31-P3)

比如说,和许多热带雨林土壤一样,热带草原的土壤通常为含酸量高的氧化土(某些氧化物矿物占主导)和老成土(不含碳酸钙的土壤),在这些土壤中,磷、钙、镁、钾这样的矿物质含量非常低,而铝的含量却很高。

8. Then calcium carbonate from the decaying lime plaster might have been taken out by the roots of the trees growing there, uh, up into their leaves, and made them give off infrared light much more brightly than the surrounding vegetation. (TPO36-L2)

腐坏的石膏产生的碳酸钙可能会被树木的根吸收,运输到树叶上,让这些树木在红外照射下放出比周围的树木更加明亮的光。

9. On Earth, liquid water removes carbon dioxide from the atmosphere and combines it with calcium, from rock weathering, to form carbonate sedimentary rocks.(TPO51-P2)

在地球上,液态水从大气中带走二氧化碳,并使之与钙结合,从岩石风化,到形成碳酸盐沉积岩(都是二氧化碳与钙结合的实例)。