adj.地位较高的；上面的；内地的；地表层的n.鞋帮，靴面；兴奋剂；令人兴奋的经历； 变形： 复数：uppers 双语释义：adj.(形容词)[A] 较高的,上部的 higher in place or position; situated above another part英英释义： upper[ 'ʌpə ]n.the higher of two berths同义词：upper berthpiece of leather or synthetic material that forms the pa