Antero-posterior diameter of atlas

例句：

1. 1.The car's antero-posterior diameter is 2.5 meters.
   这辆车的前-后直径是2.5米。
2. 2. The new model has a larger antero-posterior diameter than the old one.
   新款车的前-后直径比旧款的要大。
3. 3. The engineer measured the antero-posterior diameter of the engine block.
   工程师测量了发动机缸体的前-后直径。