2.Small meteorites have left impact craters all over the planet’s surface.
这个星的表面布满小块下的撞击坑。
3.One theory about the existence of extraterrestrial life rests on the presence of carbon compounds in meteorites.
地球外存在生命的理论是基于星上存在碳化合物质这一事实的。
4.If you look over the element ratios we measured, you might conclude that our comet particles look more like chondritic porous IDPs than CI chondrite meteorites.