crater

/ˈkreɪtər/

a bowl-shaped geological formation at the top of a volcano

中文释义：火山口；陨石坑

The volcano's crater emitted a steady plume of smoke and ash.

火山口持续喷出烟尘和灰烬。

Scientists studied the impact crater to learn more about the asteroid collision.

科学家研究撞击坑以了解更多关于小行星碰撞的信息。