单词：Trias
音标：['traiәs] ；
n. 三叠纪
n. The formation situated between the Permian and Lias, and so
named by the Germans, because consisting of three series of strata,
which are called in German the Bunter sandstein, Muschelkalk, and
Keuper.
named by the Germans, because consisting of three series of strata,
which are called in German the Bunter sandstein, Muschelkalk, and
Keuper.