adjective🔗Share白垩的，白垩纪的 Of or relating to chalk."The Cretaceous period saw the development of abundant chalk formations. "白垩纪时期出现了大量的白垩地层。geologyageChat with AIVocabulary GamePractice Reading
adjective🔗Share白垩的，白垩纪的 Consisting of chalk."The artist preferred using cretaceous pencils for sketching because they created soft, easily blendable lines. "这位艺术家喜欢用含白垩成分的铅笔来素描，因为它们能画出柔和且容易晕染的线条。geologymaterialsubstanceChat with AIVocabulary GamePractice Reading
