cretaceous 核心詞議：
adj. 白堊紀(jì)的
n. 【地】白堊紀(jì)[系]
cretaceous 基本解釋
adj. 白堊的，白堊紀(jì)的
n. 白堊紀(jì)，白堊系
速記方法知識擴(kuò)展
詞源考究
詞源同crayon，石灰，粉筆。
cretaceous 變化形式
易混淆的單詞： Cretaceous
中文詞源：
Cretaceous 白堊紀(jì)的
詞源同crayon, 石灰，粉筆。
cretaceous
精選例句
1、 These animals were not as sensitive to climate changes in the Cretaceous period as they are today.
這些動物在白堊紀(jì)對氣候變化不像今天這樣敏感。
常見考點例句：
- That means that our record of balaur is restricted to the very end of the cretaceous .
- 這意味著我們有關(guān)巴拉烏爾龍的記錄限定于白堊紀(jì)的晚期的晚期。
- One confounding factor is that the late cretaceous was also a period of great volcanic activity .
- 令人生疑的一個因素是，白堊紀(jì)末期也是個火山劇烈活動的時期。
- Longhu mountain , located in the xinjiang basin , records the geological evolution of the cretaceous period .
- 龍虎山--位于信江盆地，記錄了該區(qū)域白堊紀(jì)時期的地質(zhì)演化。
- While in australia , she sampled bones from 18 different dinosaurs that lived in the antarctic circle during the early cretaceous period .
- 在澳大利亞，她研究了18種不同恐龍的化石樣本，這些恐龍在早白堊紀(jì)都生活在南極圈以內(nèi)。
- That date marks one of five recognised mass extinctions in history ( the end of the cretaceous was another ) .
- 歷史公認(rèn)的5次物種大滅絕事件之一就是以三疊紀(jì)末期為標(biāo)志的（另一次發(fā)生在白堊紀(jì)末期）。