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;
一些没有脚的动物有小翼或者鳍,如鱼;这样的动物有些有四只鳍,两只在上,两只在腹部,如乌颊鱼和BASSE;