1·Their skulls show they had no chewing muscles.
它们的头骨显示它们没有咀嚼肌。
2·Their skulls, pelvises, and hind feet are reptilian.
它们的头骨、骨盆和后脚属于爬行动物。
3·Perhaps the grossest thing I've done as a naturalist is to boil animal skulls.
也许我作为一个自然学家做过的最恶心的事就是煮动物的头骨。
4·He took the skulls and put them in the lathe and turned them till they were round.
他把头骨放在车床上转动，直到它们变圆。
5·Another theory is that developed skulls are used to treat difficult foods like rabbits, reindeer, foxes, and horses.
另一个理论认为发达的头骨是用来对付像兔子、驯鹿、狐狸和马这样难嚼的食物的。