Mining and Geology. A distinctive body of rock, ore, sediment, etc. A vertical eruptive channel in and below a volcano which opens into the crater…
| 单词 | θ4960 |
| 释义 | the world > the earth > structure of the earth > structural features > mass > [noun] > of rock > cylindrical mass (1) pipe1877 Mining and Geology. A distinctive body of rock, ore, sediment, etc. A vertical eruptive channel in and below a volcano which opens into the crater… |
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