volcanic activity

基本解释

Some of the key evidence to be presented at the conference will come from studies of past volcanic activity.
在這個會議上展示的一些關鍵証據來自於以往對火山活動的研究。
The alternative, that the carbon came from the volcanoes, is unlikely because the spike is much shorter than the period of volcanic activity.
另一種說法是這種碳元素來自於火山，但這不可能，因爲碳數量激增期比火山活動期要短得多。
Here, volcanic activity beneath the earth’s crust sends sulfur-rich plumes spewing up from gashes in the seafloor into the ocean, where the plumes support unique ecosystems of animals and microbes.
在這裡，地殼以下的火山活動將富含硫磺的菸塵從海底的裂縫中噴出，這些菸塵維系著一些特殊的動物和微生物賴以生存的生態系統。

Volcanic activity broke the large island into pieces that came to the surface of the sea over time.
She found out about the volcanic activity that has shaped the surface of Mars.
Because of volcanic activity, Alaska also has a lot of earthquakes.

One confounding factor is that the late Cretaceous was also a period of great volcanic activity.
ECONOMIST: Mass extinctions