cretaceous
kri'teiʃәs
基本解释
a. 白垩系的, 白垩纪的
n. 白垩纪, 白垩系
英文释义
n. from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants
a. abounding in chalk
a. of or relating to or denoting the third period of the Mesozoic era
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