leftismn.左翼主义；急进主义leftadj.左边的adv.向左n.左边；左派分子；【体】左手拳动词leave的过去式和过去分词形式.left internal carotid左颈内动脉left-hand tool joint反扣钻杆left ventricular bands左心室条束(调节束, 假性腱索)left handed complimentn.挖苦的恭维话left ventricular/ET左心室／病因学left-hand continuity左方连续left lateral decubitus左外侧褥疮left-turning traffic左转行车left atrial diamension左房内径left in place formwork固定模板