n. a faint constellation in the southern hemisphere near Hydra and Corvus
n. a bowl-shaped depression formed by the impact of a meteorite or bomb
n. 火山口, 环行山, 弹坑
[化] 焊口; 火山石; 弧坑; 焰口
1. The moon has many craters caused by meteor impacts.
月球上有许多由于陨石撞击而形成的坑。
2. We stood at the edge of the crater and admired the view.
我们站在坑边欣赏风景。
3. Scientists study craters to learn more about the history of our planet.
科学家研究坑以了解我们星球的历史。