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;
有脚的
物有小翼或者鳍，如鱼；这样的物有有四只鳍，两只在
上，两只在腹部，如乌颊鱼和BASSE；
生成，部分未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
