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不能独立存在的我我的名字叫做钙,在生物圈里也算是小有名气,紧紧跟在铁、铝、硅、氧四大家族之后。我在自然界中不能独立存在,大多都是化合物的形态——分布十分广泛,在地壳中能够占到3%。它们中有好些个家伙的名字你们早已是耳熟能详,像石灰石,大理石,石膏什么的。
I can not exist alone My name is calcium, in the biosphere can be considered a little known, followed by iron, aluminum, silicon, oxygen, after the four major families. I can not exist independently in nature, mostly in the form of compounds - distributed widely, accounting for up to 3% of the earth’s crust. There are a few guys in the names of you guys who are already familiar, like limestone, marble, gypsum or something.