From these studies, scientists have concluded that the surface of the primitiveEarth was covered with oceans containing the molecules fundamental to life.
从这些研究中,科学家们得出结论,海洋覆盖着原始地球的表面,其中含有构成生命的基本分子。
2
Carbonaceous chondrite planetesimals were adsorbed on the mantle surface of the primitiveearth, forming primitive carbon-rich areas.
碳质球粒陨石星子被吸积于原始地球上地幔表层,形成原始富碳区。
3
Archaeopteryx, supposedly the oldest and most primitive bird on Earth, might not have been a bird after all, scientists say.