Paralysis of a single limb, muscle, or muscle group. 单瘫指单一肢体、肌肉或一组肌肉的瘫痪
The act of straightening or extending a limb. 伸直伸直或伸展肢体的行为
A muscle that extends a limb or other part. 伸肌一块伸展肢体或其它部份的肌肉
The main trunk of the systemic arteries, carrying blood from the left side of the heart to the arteries of all limbs and organs except the lungs. 主动脉系统血管的主干道，将血液由心脏左侧输送到除肺部以外的所有肢体及器官的动脉里
