active ·adjective (VOLCANO)
Definition: An active volcano could throw out rocks, fire, etc. at any time. Level: C1
这座岛上有一座活火山，随时可能喷发。
The island is home to an ___active volcano, which could erupt at any moment.
登山者被警告远离这座活火山，因为它有突然喷发的危险。
Hikers were warned to stay away from the ___active volcano due to the risk of sudden eruptions.
科学家们正在密切监测这座活火山，寻找即将喷发的迹象。
Scientists are closely monitoring the ___active volcano for signs of an imminent eruption.