volcanic activity的用法和樣例：
例句
- This is unlike volcanic activity above the sea.
這同高出洋麵的火山活動是不同的。 - "A science fiction cannot not be regarded as a mere entertainment, but in fact it tells the reader much more."
"科幻小說不能簡單地看成是供消遣的，而實際上它給讀者展示更深刻的內容。" - Contemporaneous volcanic activity is represented by basic to intermediate lava and tuff.
同時期的火山活動性是由中性熔岩與凝灰岩呈基性而體現出來的。
