科学家们正在监测那座超级火山的地质活动，因为它有能力引发全球性气候变化。

Scientists are monitoring the geological activity of that ___supervolcano as it has the potential to trigger global climate changes.

黄石公园下方隐藏着一个超级火山，它在过去曾发生过巨大的喷发。

Yellowstone Park sits atop a ___supervolcano that has experienced massive eruptions in the past.