英语语法分析

The third introduces the mechanical models of Haversian osteon.

第三部分介绍了哈弗氏骨的力学模型。

Many dinosaur bones do have Haversian canals, and that is true.

良多恐龙确实有哈弗森管，这是事实不能否认。

Many dinosaur bones do have Haversian canals, and that is true.

很多恐龙确实有哈弗森管，这是事实不能否认。