英语语法分析

Let's take Mount Etna for example.

让我们以埃特纳火山为例。

It was the volcanoes Vesuvius and Etna that she meant.

她指的是维苏威火山和埃特纳火山。

Mount Etna is one of the most active volcanoes on Earth.

埃特纳火山是地球上最活跃的火山之一。