劍橋詞典a dangerous swelling of the wall of the aorta (= the body's largest artery ) 主動(dòng)脈瘤 Less than half the people with ruptured aortic aneurysms survive . 主動(dòng)脈瘤破裂的病人只有不到一半的存活率。 返回 aortic aneurysm