| 单词 | olivine |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔basalt〕A hard, dense, dark volcanic rock composed chiefly of plagioclase, pyroxene, and olivine, and often having a glassy appearance.玄武岩：一种硬的、致密的、黑色的火山岩。它主要由斜长石、辉石和橄榄石组成，外表经常很光滑美国传统〔dunite〕A dense igneous rock that consists mainly of olivine and is a source of magnesium.纯橄榄岩：一种密度大的大成岩，主要由橄榄石组成，是镁的一种来源美国传统〔peridotite〕Any of a group of igneous rocks composed mainly of olivine and various pyroxenes and having a granitelike texture.橄榄岩：含有大量橄榄石和各种辉石并有花岗岩状质地的岩石美国传统〔peridot〕A yellowish-green variety of olivine used as a gem.贵橄榄石：一种黄绿色橄榄石，被用做宝石美国传统 |
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