left out漏掉, 忽视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-hand polarized wave左旋偏振波Left ventricle remodelling左心室构型left recursive nonterminal左递归非终结符left auricular enlargement左房增大left pre-ejection period左心室射血前期left-handed metamaterial左手材料left atrial emptying index左心房排空指数left representation module左表示模left cardiac valve disease左心瓣膜疾病left upper scapular border左肩岬上缘