当火山喷发时，它被称为活火山。

When a volcano is erupting, it is called an active volcano.

活火山内部的空气炙热且充满有毒气体。

Inside an active volcano, the air is hot and full of toxic gases.

靠近活火山是危险的，但仍有人住在它们附近。

It is dangerous to be near an active volcano, yet there are people who live very close to them.

穿上你的登山靴，探索有瀑布和活火山的岛屿。

Put on your hiking boots and explore islands with waterfalls and active volcanoes.

埃特纳火山位于意大利南部，是欧洲最高的活火山。

Located in southern Italy, Etna is the highest active volcano in Europe.

维苏威火山是座活火山。

Mount Vesuvius is an active volcano.

维苏威山是一座活火山.

Vesuvius is an active volcano.

活火山随时可能喷发。

An active volcano may erupt at any time.

墨西哥西南部的活火山。

An active volcano in southwestern Mexico.

嗯，活火山随时都会喷发的呀！

Well, an active volcano could erupt any time!