left adj.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.
双语例句
Left descending arteries were ligated at the distal side of the second diagonal branch. 分离左冠状动脉左前降支，第二对角支远端结扎。
The deep type of MB crosses the left anterior descending coronary artery and can twist the coronary artery and compromise its diastolic flow. 本症的深入型可见左前降枝弯曲及舒张期血流受到影响。
