craters

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

借助小型望远镜可以看清月球上的环形。

2.The battlefield was full of craters made by exploding shells.

战场上布弹坑。

3.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。

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

其顶端有一系列崩塌的口，或称臼。

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

随着爆发形成了多个大口(破口)。