The seal's flipper is homologous with the human arm.海豹的鳍肢与人类的手臂同源。The former are considered to be homologous with the sepals of Ranunculus.一般认为,前者的花瓣与毛茛属植物花萼同源.Homologous parts, as has been remarked by some authors,...
This explanation fits the facts and is psychologically plausible.这一解释与事实相符,从心理角度看也有理.She was physically delicate and psychologically unstable.她身体孱弱，心理上也不够稳定。Boys mature more slowly than girls,both physically and psycholo...