The hills are remnants of an earlier geological era, scraped bare of most soil and exposed to the elements.
这些山丘是早期地质时代的遗迹，大部分土壤都被刮掉， 暴露在自然环境中。
| 单词 | Geological eras |
| 释义 |
Geological eras
原声例句
2018年英语六级阅读真题 The hills are remnants of an earlier geological era, scraped bare of most soil and exposed to the elements. 这些山丘是早期地质时代的遗迹，大部分土壤都被刮掉， 暴露在自然环境中。 穿越星际秘境 These different layers likely represented different geological eras, which would give scientists the clearest picture of the history of Jezero, as well as giving them an opportunity to find life itself. 这些不同的地层可能代表不同的地质时代，这将使科学家能够最清晰地了解杰泽罗的历史，并给他们一个发现生命本身的机会。
英语百科
Era (geology)A geologic era is a subdivision of geologic time that divides an eon into smaller units of time. The Phanerozoic Eon is divided into three such time frames: the Paleozoic, Mesozoic, and Cenozoic represent the major stages in the macroscopic fossil record. These eras are separated by catastrophic extinction boundaries, the P-T boundary between the Paleozoic and the Mesozoic and the K-T boundary between the Mesozoic and the Cenozoic. There is evidence that catastrophic meteorite impacts played a role in demarcating the differences between the eras. |
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