| 释义 |
| | | | NOUN | | | | | /vɒlˈkeɪnəʊ/ | | | | | | a mountain that forces hot gas , rocks, ash , and lava (= melted rock) into the air through a hole at the top . Some volcanoes are not immediately dangerous because they are not active and have become dormant . Others will never be dangerous again because they are completely extinct 火山 | The volcano last erupted over fifty years ago. 这座火山最近一次喷发是在50多年前。 | | | |