A somewhat controversial theory had been proposed about 25 years ago suggesting such dinosaurs were equipped with a hinge between the upper jaw and the rest of the skull.
在25年前，曾有人提出了一个很据争议的理论，认为这种恐龙的上颚有个肌腱和颅骨的其他部分连接。
After a skull and decomposing hands are found in a dumpster, the team must not only solve the crime but also search for the rest of the victim's remains.
垃圾桶里发现了个头骨和腐烂的手，这下不但要破案，还得先找到其它的残骸。
Rather than a flexible lower jaw joint, they had a hinge between the upper jaws and the rest of the skull.
他们没有可活动的下颌关节，而是有一条筋腱连接着上颚和头骨。
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