基本解释adj.白堊的；白堊紀的n.白堊紀；白堊系同根派生 cretaceously相关词英汉例句用作形容詞 (adj.)The story takes place 6500 years ago in the late Cretaceous period.故事發生在6500萬年前的白堊紀晚期。用作名詞 (n.)From the Cretaceous, Tarim basin began the new evolutional stage of foreland basin.從白堊紀初期開始cretaceously更多例句