用“cretaceous period”造句大全,cretaceous period造句
1、cretaceous period [ system ]
2、It is well known that modern aves lack dentition unlike their toothed ancestors of the Jurassic and cretaceous periods.
1、cretaceous period [ system ]
2、It is well known that modern aves lack dentition unlike their toothed ancestors of the Jurassic and cretaceous periods.