剑桥词典a narrowing of the heart valve that supplies the aorta (= the body's largest artery ), reducing the blood flow to the aorta 主动脉瓣狭窄 He had been suffering from aortic stenosis and died of heart failure in his sleep . 他主动脉瓣狭窄，在睡梦中死于心脏衰竭。 返回 aortic stenosis