Let me write this out, alkaline earth metals.
让我写出来，碱土金属。
Alkaline Earth Metals
原声例句
可汗学院：生物化学
Crash Course 综合篇
The first two columns on the left are your alkali metals, and your alkaline earth metals.
左边的前两列是碱金属和碱土金属。
可汗学院：生物化学
If we move one over to the right this group two right over here, these are called the alkaline earth metals.
如果我们把一个移到右边，这两个就在这里，它们被称为碱土金属。
英语百科
Alkaline earth metal
The alkaline earth metals are six chemical elements in column (group) 2 of the Periodic table. They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). They have very similar properties: they are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure.
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