英语词汇cretaceous-tertiary怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	cretaceous-tertiary
释义	cretaceous-tertiary 网络释义 1 ?第三纪 ...认为恐龙在撞击事件前就因如火山活动，气候变化或海平面波动等其它因素而已经灭绝，因为在白垩纪/第三纪（Cretaceous-Tertiary）之交，即K-T界线附近3米左右的地层中缺少恐龙化石发现的证据。 2 ?白垩白垩-第三纪短语 1 Cretaceous-Tertiary extinction event 白垩纪 2 late cretaceous-tertiary periods 晚白垩第三纪 3 cretaceous-tertiary red beds 白垩纪双语例句 1 This change in plankton found in marine deposits is what marks the boundary between the Cretaceous and the Tertiary. 海洋沉积物中浮游生物的这种变化标志着白垩纪和第三纪的分界线。 2 This 65.5-million-year-old layer of Earth separates fossils of the Cretaceous period from those of the Tertiary period. 这个有着6550万年历史的地层分离了白垩纪的化石和第三纪的化石。 3 From the Cretaceous to Tertiary, fault sealing built up with thickening of the overlying strata. 白垩纪至第三纪，随上覆地层增厚，断层封闭性增强。
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