劍橋詞典 atrium noun [C] (ROOM) a very large room , often with glass walls or roof , especially in the middle of a large shop or office building (尤指大商店或辦公樓的)中庭,天井 atrium noun [C] (HEART) anatomy specialized (also auricle) one of the two spaces at the top part of the heart that receive blood from the veins and push it down into the ventricles (= lower spaces ) 心房 返回 atrium