adj.用过的；习惯于；二手的；旧的v.使用（ use的过去式和过去分词）；常常，经常； 双语释义：adj.(形容词)[A] 用过的,旧的,二手的 (usually of goods) which has already had an owner; secondhandadj.(形容词)[P] 习惯于…的 in the habit of; accustomed to英英释义： usedadj.employed in accomplishing something"the principle of surp