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 主動脈瓣狹窄 He had been suffering from aortic stenosis and died of heart failure in his sleep . 他主動脈瓣狹窄，在睡夢中死於心髒衰竭。 返回 aortic stenosis