cretaceous怎么读/cretaceous的发音
cretaceous的音标：英[krɪˈteɪʃəs] 美[krɪˈteɪʃɪs]
英： 美：
cretaceous是什么意思
n. 白垩纪, 白垩系
a. 白垩系的, 白垩纪的
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
cretaceous的用法和双语例句
1. The Cretaceous period is known for its diverse dinosaur species.
白垩纪以其多样的恐龙物种而闻名。
2. Many fossils from the Cretaceous era have been discovered in North America.
许多白垩纪时代的化石都是在北美发现的。
3. The chalk cliffs were formed during the Cretaceous period.
这些白垩质的悬崖是在白垩纪时期形成的。
4. The Cretaceous saw the emergence of the first flowering plants.
白垩纪见证了第一批开花植物的出现。
5. Dinosaurs went extinct at the end of the Cretaceous period.
恐龙在白垩纪末期灭绝。
6. The climate during the Cretaceous was much warmer than it is today.
白垩纪时期的气候比今天温暖得多。
7. Scientists study Cretaceous rocks to learn about ancient environments.
科学家通过研究白垩纪岩石来了解古代环境。
8. The Cretaceous is the last period of the Mesozoic Era.
白垩纪是中生代的最后一个纪。
9. Marine life flourished in the oceans during the Cretaceous.
白垩纪时期，海洋生物在海洋中繁盛。
10. The Cretaceous-Paleogene extinction event marked the end of the dinosaurs.
白垩纪-古近纪灭绝事件标志着恐龙时代的终结。