Cretaceous
US /krɪˈteɪ.ʃəs/
UK /krɪˈteɪ.ʃəs/
形容詞
白堊紀的
relating to the last period of the Mesozoic era, between the Jurassic and Tertiary periods, characterized by the dominance of dinosaurs and the appearance of flowering plants
範例:
•
Tyrannosaurus rex lived during the late Cretaceous period.
霸王龍生活在白堊紀晚期。
•
The Cretaceous extinction event led to the disappearance of non-avian dinosaurs.
白堊紀滅絕事件導致了非鳥類恐龍的消失。
名詞
白堊紀
the Cretaceous period or system of rocks
範例:
•
Many chalk deposits were formed during the Cretaceous.
許多白堊沉積物是在白堊紀形成的。
•
The Cretaceous followed the Jurassic period.
白堊紀緊隨侏羅紀之後。