craters

Lunar craters can be plainly seen with the aid of a small telescope.

借助小型望远镜可看清月球上的环形。

The battlefield was full of craters made by exploding shells.

战场上布弹坑。

Small meteorites have left impact craters all over the planet’s surface.

这个行星的表面布了小块陨石留下的撞击坑。

A series of collapse craters, or calderas, lie at its summit.

其顶端有一系列崩塌的火口，或称火臼。

The eruptions were associated with the development of a number of giant craters (calderas).

随着火爆发形成了多个大火口(破火口)。