4周搞定2000+托福核心词
helium = helio(太阳) + ium(元素) = 因太阳光谱而发明的元素→氦
aluminum = alumin(铝) + ium(元素) = 铝元素→铝
甲碱中的金属元素→钾
potassium
常考释义
But the soil at the Botai settlements, it was found with relatively little potassium, which makes it far more likely that the phosphorus came from horses. OK?
但是在波泰定居的土壤中，只发现非常少的钾。所以这些磷更有可能是来自于马匹的，对不对？
来源于：听力OFFICIAL31 L4n. 钾
No potassium did we find in this mineral.
在这种矿石中我们没有发现钾.
These chemicals modulate the effect of potassium.
这些化学物质可以调节钾的功效。
The easiest way to stop the heart is an injection of potassium.
让心脏停跳最容易的方法就是注射钾盐。
来自《犯罪心理 第4季第17集》
图片源自网络
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.
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。
来源于：阅读OFFICIAL31 P3But the soil at the Botai settlements, it was found with relatively little potassium, which makes it far more likely that the phosphorus came from horses. OK?
但是在波泰定居的土壤中，只发现非常少的钾。所以这些磷更有可能是来自于马匹的，对不对？
来源于：听力OFFICIAL31 L6[pəˈtæsiəm]
基本释义 n. 钾
常考释义 n. 钾
No potassium did we find in this mineral.
在这种矿石中我们没有发现钾.
These chemicals modulate the effect of potassium.
这些化学物质可以调节钾的功效。
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