单词	plumboniobite
释义	plumboniobite noun plum·​bo·​niobite "+ : a niobite of complex composition resembling samarskite but containing lead and found in dark brown to black masses in pegmatite veins or massive slate Word History Etymology German plumboniobit, from plumb- + niobit niobite
随便看	maskeeg Maskegon maskegons maskegs maskelynite masker maskers maskery maskil maskilic maskilim Maskin masking masking paper masking pat masking tape maskings maskinonge maskinonges Maskins masklike masks maslin maslin kettle maslins

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