英语语法分析

All we have is the tip of the upper jaws -bones called the premaxillae, and a broken tooth preserved in one socket, "said Dr Martill."

我们拥有的是上颌的尖端，这是一种叫做前颌骨的骨头；还有一个保藏在牙槽里的、破碎的牙齿。