| 单词 | sima |
| 释义 | Word Frequency sima(ˈsaɪmə) noun 1. the silicon-rich and magnesium-rich rocks of the earth's oceanic crust, the most abundant individual rock being basalt 2. the earth's continental lower crust, probably comprised of gabbro rather than basalt Derived forms simatic (saɪˈmætɪk) adjective Word origin C20: from si(lica) + ma(gnesia) |
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