geological period
参考词典中geological period的常规释义：
基本释义
- 地质时代
英英解释
1个名词解释
- a unit of geological time during which a system of rocks formed
[同] geological period, period
[例]- ganoid fishes swarmed during the earlier geological periods
点击查看……- a unit of geological time during which a system of rocks formed
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