| 单词 | 铁镁 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔lamprophyre〕Any of several intermediate igneous rocks constituting feldspar and ferromagnesium minerals that occur as dikes and minor intrusions.煌斑岩：任一种含有长石和铁镁矿物中型的黑色岩石，呈现为岩脉或侵入岩美国传统〔mafic〕Containing or relating to a group of dark-colored minerals, composed chiefly of magnesium and iron, that occur in igneous rocks.铁镁质的：含有或与一组深色矿物有关的，主要由镁和铁组成，出现在火成岩中的美国传统 |
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