/ˈdju:plɪkət; US ˈdu:pləkət ||; ˈdupləkɪt/noun [C] something that is exactly the same as sth else 复制品；副本 duplicate adj (only before a noun 只用于名词前) a duplicate key 一把复制的钥匙 in duplicate with two copies (for example of an official piece of paper) that are exactly the same 一式两份: The contract must be in duplicate. 此合约必须一式两份。