| 1. | The lunar highlands are scarred by innumerable craters ranging up to 236 km in diameter .
在月球的高地上留下无数环形山，有的直径达236千米。 |
| 2. | Present evidence points to a volcanic origin far in the past for the majority of the craters .
最近的资料表明，现在比过去更倾向于火山是大多数环形山的起因。 |
| 3. | Craters resembling those on the moon are produced on the earth both by volcanic activity and by meteoric impact .
由于火山爆发和陨星的撞击，类似于月球上的环形山地在地球上产生了。 |
| 4. | The surface of the moon is pitted with craters
月球表面因有环形山而变得坑坑洼洼。 |
| 5. | The squirrel stashes away nuts for winter
在本文中指的是月球上的环形山。 |
| 6. | At the right is a close up . we can see both kinds of craters
右图是月面特写，可以清楚看到两种不同的环形山。 |
| 7. | Consanguineous ring structures
同族环形山构造 |
| 8. | Concentric ring structures
同心环形山构造 |
| 9. | A large crater formed by volcanic explosion or by collapse of a volcanic cone
火山口火山爆发而形成的环形山或大山核心部分的崩塌而形成的环形山 |
| 10. | The landslide and debris flow based on plagioclase coincidently locate in ringed mountains
以斜岩作为地质基础的滑坡和泥石流等地质灾害恰恰分布在环形山脉中。 |
