词汇 | magma |
词根词缀 | 词源: c.1420, "dregs," from L. magma "dregs of an ointment," from Gk. magma "an ointment," from root ofmassein "to knead, mold," from PIE *mag- "kneading" (see macerate). Geological meaning "molten rock" is 1865. |
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