ventral lobe

例句：

1. 1. The animal has a ventral fin on its back.
   这个动物有背鳍。
2. 2. The ventral region of the brain is involved in memory processing.
   大脑的腹区参与记忆处理。
3. 3.The ventral side of the fish is covered with scales.
   鱼的腹面覆盖着鳞片。