leftoffadj.不用的(脱掉的)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-half end[计] 左端Left rumen vein瘤胃左静脉left hand adder左侧数加法器left hand screw左螺旋,左转螺钉leftmost symbol最左符号left uninvolved左侧未受累的left integrator左积分器left axis shift[医] 轴左偏left upper lobe左上叶left bank slope左侧边坡