名词
中文翻译：上石炭系
同义词：
['upper carboniferous', 'upper carboniferous rocks']
例句：
-
1.The Upper Carboniferous period is characterized by the widespread distribution of marine life.
上石炭系时期以海洋生物的广泛分布为特征。
-
2.The Upper Carboniferous rocks are rich in minerals and fossils.
上石炭系岩石富含矿物和化石。
-
3. The Upper Carboniferous period was a time of great environmental change.
上石炭系时期是一次巨大的环境变化时期。