Of swimming creatures that are destitute of feet, some have winglets or fins, as fishes: and of these some have four fins, two above on the back, two below on the belly, as the gilthead and the basse;
一没有脚的动
有小翼或者鳍,如
;这样的动
有
有四只鳍,两只在
上,两只在腹部,如
和BASSE;