any of various hoofed mammals of the order Artiodactyla,which includes cattle,deer,camels,hippopotamuses,sheep,and goats,that have an even number of toes,usually two or sometimes four,on each foot是什么意思_any of various hoofed mammals of the order Artiodactyla,which includes cattle,deer,camels,hippopotamuses,sheep,and goats,that have an even number of toes,usually two or sometimes four,on each foot在线翻译_英语_读音_用法_例句