| 释义 |
cretaceous
[英] [krɪˈteɪʃəs]
[美] [krɪˈteʃəs]
[形] 白垩纪的
词频排名 30909/55435
学习人数 1749
难度等级 9/10
认知比例 22.22%
例句
The story takes place 6500 years ago in the Cretaceous period.
故事发生在6500万年前的白垩纪晚期。
The Cretaceous extinction was like a terrible streak of bad luck lasting millions of years.
白垩纪的生物绝灭，犹如一场持续千百万年的可怕厄运。
"The earliest known bird, Archaeopteryx, lived during the Jurassic, the period before the Cretaceous."
已知的最早的鸟类——始祖鸟，生活于白垩纪之前的侏罗纪。
助记
联想
cetacean 鲸类动物
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