rareearth
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rare earth
rare earth英英释义Nounany element of the lanthanide series (atomic numbers 57 through 71)rare earth例句用作名词(n.)The expected amount of hydrogen loss matches the net excess of oxidized material on Earth...
rare earth英英释义Nounany element of the lanthanide series (atomic numbers 57 through 71)rare earth例句用作名词(n.)The expected amount of hydrogen loss matches the net excess of oxidized material on Earth...