cretaceous
/kri'teiʃәs/
BNC词频: #18,039
当代词频: #25,007
中文释义
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