CR2造句怎么写

调查结果发现对于CR2陨石的来源痕迹，对于宇宙化学环境，那里氨是遍布的，作者写道。

本文主要介绍了对CR2型胶圈装订机的改进。

This text main introduce the improvement of the binding machine to the Model CR2 glue.

"The findings appear to trace CR2 meteorites' origin to to cosmochemical regimes where ammonia was pervasive," the authors write.