Evidence of abrupt change — on a geological time scale — wrought by human hands would seem to be overwhelming.
人类造成的突变(以地质时期为尺度衡量)，其证据触目惊心。
It is also possible to read about the history of the geological time scale, and find out more about how it is organised, or go to a specific time period using the UCMP geologic time Machine.
从这里可以了解地质时标的历史，地质时标的组成，也可以利用加州大学古生物博物馆的“时间机器”进入特定的地质时期。
The sudden appearance of abundant and varied fossils makes a worldwide time line for dividing the geological time scale into two main parts.
丰富多样的化石的突然出现为在世界范围内把地质年代划分为两大主要部份提供了时间界限。
Scientists are now debating whether it should be officially included in the Geological Time Scale.
科学家正讨论是否应正式把这个时期列入地质年代表。
Scientists are now debating whether it should be officially included in the Geological Time Scale.
科学家正讨论是否应正式把这个时期列入地质年代表。
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