volcanic activity

• 火山活动

volcanic activity的用法和样例：

例句

1. This is unlike volcanic activity above the sea.
   这同高出洋面的火山活动是不同的。
2. "A science fiction cannot not be regarded as a mere entertainment, but in fact it tells the reader much more."
   "科幻小说不能简单地看成是供消遣的，而实际上它给读者展示更深刻的内容。"
3. Contemporaneous volcanic activity is represented by basic to intermediate lava and tuff.
   同时期的火山活动性是由中性熔岩与凝灰岩呈基性而体现出来的。