我叫她去刷牙,她就跟我顶起嘴来.I asked her to go and brush her teeth and she just sassed me back.它们的压力之大足以把锅盖顶起.They press hard enough against the lid of the pan to lift it up.那人用千斤顶把他的汽车顶起以修理漏气的轮胎.The man jacked up his car to fix a fl...
Most babies have a closed ductus arteriosus by 72 hours after birth.大多数婴儿在出生后72小时内动脉导管闭合.Methods: Umbilical vein, ductus venosus and venous ligament and ligamentum teres hepatis anatomized, observed and measured.方法: 解剖观测...