| 例句 |
Many oceanic islands are volcanic.很多海洋岛屿都是因火山活动而形成的。The instruments are used to detect volcanic activity on the island.这些仪器是用来探测岛上火山活动情况的。The islands were formed by volcanic activity.这些岛屿是由火山活动形成的。Scientists took readings over several weeks and found that there was no unusual volcanic activity.科学家读了几个星期的数据后发现没有不正常的火山活动。Volcanic activity has created thermal springs and boiling mud pools.火山活动产生了温泉和沸腾的泥浆池。 |