名词 tetrapod:

1. a vertebrate animal having four feet or legs or leglike appendages

tetrag正方晶的, 四方晶的tetran.脂鲤（南美产的热带鱼）pref.四；四原；四基tetraisocyanaten.四异氰酸酯tetrabromizatedadj.四溴化的Tetraodontoidein.鲀亚目tetrazonoporate四环孔的tetrasporangiumn.[植]四分孢子囊tetraboric acid四硼酸Tetracy-cline四环素tetracarpellaryadj.[植]四心皮的tetraiodouthene四碘乙烯(外用撤布粉, 抗菌油膏)tetrachromatism视觉四色说

1. But tetrapods, which evolved from fish, did.
   但是从鱼类进化而来的四足动物却有手指。
2. Land-dwelling tetrapods constitute the remaining majority of sarcopterygians.
   陆生的四足动物占了肉鳍鱼类的绝大部分。