volcanic activity的用法和樣例：
例句
- This is unlike volcanic activity above the sea.
這同高出洋面的火山活動(dòng)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(shuō)不能簡(jiǎn)單地看成是供消遣的，而實(shí)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(shí)期的火山活動(dòng)性是由中性熔巖與凝灰巖呈基性而體現出來(lái)的。
