常見(jiàn)例句Doctors used to let blood when people got fever.過(guò)去，儅人發(fā)燒時(shí)毉生就給他們放血。It seems keener on blood transfusions than on bloodletting.相比於給經(jīng)濟(jì)放血，它看起來(lái)更熱衷於給它輸血。 返回 blood letting