关于toes的学习知识

Haveyoueverseenahorsewithtoes(脚趾)?Millionsofyearsago,horseshadmanytoes.Theyhadfourtoesoneachfrontfoot.Theyhadthreetoesoneachbackfoot.Thehorsesweresmallerthancats.Thesesmallhorseslivedintheforest.The...