ventral nuclear group

例句：

1. 1. Theventral side of the fish is coveredin scales.
   鱼的腹面覆盖着鳞片。
2. 2. The ventral muscles are responsiblefor propelling the creature forward.
   腹肌负责推动生物前进。
3. 3. Theventral region of thevertebrate body ishome to the spinal cord.
   脊椎动物身体的腹面是脊髓所在区域。