duplicate

duplicate
adjective
[attrib.]
  1. exactly like something else, especially through having been copied
    完全一样的，复制的
    a duplicate licence is issued to replace a valid licence which has been lost.
    签发了一本执照的副本以代替已丢失但仍有效的那本。
  2. having two corresponding or identical parts
    成对的，二重的
    a duplicate application form.
    一式两份的申请表。
    ■twice as large or many; doubled
    双倍的
    duplicate computer facilities and staff.
    双倍的计算机设备和员工。
noun
  1. one of two or more identical things
    完全一样的东西
    books may be disposed of if they are duplicates.
    如果书都是一样的话，可以处理掉。
    ■a copy of an original
    复制品，副本，抄件
    locksmiths can make duplicates of most keys.
    锁匠大部分钥匙都能配。
  2. short for duplicate bridge
    duplicate bridge的简称
  3. (archaic)a pawnbroker's ticket
    (古)当票
verb
  1. [with obj.]make or be an exact copy of
    复制；是复制品(喻)
    a unique scent, impossible to duplicate or forget.
    一种复制不出也忘不了的特殊气味。
    they have not been able to duplicate his successes.
    他们未能复制他的成功之道。
    ■(常作 be duplicated)make or supply copies of (a document)
    复印，复写（文件）
    information sheets had to be typed and duplicated.
    通知单须打印并复印。
    [as adj. duplicating]a duplicating machine.
    复印机。
    ■multiply by two; double
    使成倍增加，使加倍
    the normal amount of DNA has been duplicated thousands of times.
    DNA的正常量增加了数千倍。
    ■do (something) again unnecessarily
    （无必要地）重复
    most of these proposals duplicated work already done.
    这些建议中的大部分只是老调重弹。
常用词组
in duplicate
  1. consisting of two exact copies
    一式两份的
    forms to complete in duplicate.
    要一式两份填写的表格。
派生
duplicable
adjective
语源
  1. late Middle English (in the sense 'having two corresponding parts'): from Latin duplicat- 'doubled', from the verb duplicare, from duplic- 'twofold' (see duplex)
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