释义：假麻痹性重症肌无力，重症肌无力； 英英释义： myasthenia gravis [ 'ɡrɑ:vis, 'ɡræ-, 'ɡrei- ]n.a chronic progressive disease characterized by chronic fatigue and muscular weakness (especially in the face and neck); caused by a deficiency of acetylcholine at the neuromuscular