考古学家发现了像猿一样行走的原始猿人化石。

Archaeologists found fossils of a primitive ___ape-man who walked like an ape.

他在餐厅里大喊大叫、用手抓东西吃，表现得像个猿人。

He behaved like an ___ape-man in the restaurant, shouting loudly and eating with his hands.