cretaceous
发音
英 [krɪ'teɪʃəs]
美 [krɪ'teɪʃəs]
-
- adj.
- 白垩的，白垩纪的
-
- n.
- 白垩纪，白垩系
单词词源
Cretaceous 白垩纪的
词源同crayon, 石灰，粉笔。
双语例句
- 1. That means that our record of balaur is restricted to the very end of the cretaceous .
- 这意味着我们有关巴拉乌尔龙的记录限定于白垩纪的晚期的晚期。
- 2. One confounding factor is that the late cretaceous was also a period of great volcanic activity .
- 令人生疑的一个因素是，白垩纪末期也是个火山剧烈活动的时期。
- 3. Longhu mountain , located in the xinjiang basin , records the geological evolution of the cretaceous period .
- 龙虎山--位于信江盆地，记录了该区域白垩纪时期的地质演化。
- 4. While in australia , she sampled bones from 18 different dinosaurs that lived in the antarctic circle during the early cretaceous period .
- 在澳大利亚，她研究了18种不同恐龙的化石样本，这些恐龙在早白垩纪都生活在南极圈以内。
- 5. That date marks one of five recognised mass extinctions in history ( the end of the cretaceous was another ) .
- 历史公认的5次物种大灭绝事件之一就是以三叠纪末期为标志的（另一次发生在白垩纪末期）。