單詞
cretaceous
英 [kr?'te???s]
美[kr?'te??s]
基本信息
- adj. 白堊紀的；似白堊的
- n. 白堊紀；白堊系
中文詞源
Cretaceous 白堊紀的
詞源同crayon, 石灰，粉筆。
英文詞源
- cretaceous (adj.)
- 1670s, "chalky," from Latin cretaceus "chalk-like," from creta "chalk." As a geological period (with a capital C-), it was first used 1832. The extensive chalk beds of southeastern England were laid down during the Cretaceous.
雙語例句
- 1. Only in the tropics were numerous late Cretaceous groups extinguished during peaks in their evolution.
- 只是熱帶地區才有大批晚白堊紀生物類群正值其演化的極盛時期突然消亡.
來自辭典例句
- 2. The Cretaceous extinction was like a terrible streak of bad luck lasting millions of years.
- 白堊紀的生物絕滅,猶如一場持續千百萬年的可怕厄運.
來自辭典例句
- 3. Liupanshan Cretaceous basin is a mono - basin of Liupanshan inland overlapping basin.
- 六盤山白堊紀盆地是六盤山內陸疊合盆地的一個單型盆地.
來自互聯網
- 4. The story takes place 6500 years ago in the Cretaceous period.
- 故事發生在6500萬年前的白堊紀晚期.
來自互聯網
- 5. So the researchers resorted to some techniques out of a Cretaceous CSI.
- 所以科學家只能借助于《犯罪現場調查:白堊紀篇》用到的技術.
來自互聯網
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