柯林斯詞典mitral valve 1. N the valve between the left atrium and the left ventricle of the heart, consisting of two membranous flaps, that prevents regurgitation of blood into the atrium 二尖瓣 (Also called bicuspid valve) 返回 mitral valve劍橋詞典the valve (= a structure that opens and closes ) in the heart that stops blood from returning into the left atrium (= upper space ) from the left ventricle (= lower space ) 二尖瓣(心臟內(nèi)部不斷開關(guān)的瓣膜結(jié)構(gòu),可阻止血液從左心室回流到左心房) 比較tricuspid valve 返回 mitral valve