1Exactly like something else, especially through having been copied.

签发了一本执照的副本以代替已丢失但仍有效的正本。

2technical Having two corresponding or identical parts.

一式两份的申请表。

1One of two or more identical things.

书如有复本可以处理掉。

1. 1.1 A copy of an original.
   复制品，副本，抄件
   locksmiths can make duplicates of most keys

   大部分钥匙锁匠都能配。

   Example sentencesExamples

   • The child had to choose the correct items from carefully crafted duplicates; items included spectacles, a pencil, a bowl, a walking stick and a small hand drum.
   • There are several instances of singers themselves being offered duplicates instead of the original versions.
   • In fact, the specimens we used are isotypes; these represent duplicates of the first collections made of these two newly formed species.
   • He said: ‘The lockmaker kept a copy of the keys in case one was ever lost and they needed to make a duplicate.’
   • It tells the story of residents of a small town who are replaced by inert duplicates, which are hatched from alien ‘pods.’
   • Portraiture is an art unusually bedevilled by duplicates and copies.
   • The duplicates were distributed to familiarise citizens with the new currency but police feel they could be exploited and have urged people to destroy them.
   • All 10,000 patentees were contacted at their post offices of record and requested to lend the inventor's copy of their patents to the Patent Office so the copies could be duplicated and the duplicates placed in the files.
   • I have a house on a quarter acre in a south Dublin suburb with enough room to build a duplicate of the existing house in the side garden.
   • A point-in-time copy represents an exact duplicate of a data volume at the moment the copy was created.
   • Unfortunately, with time travel being so unreliable for humans, he can only create a cyborg duplicate of himself and trust that it gets the job done.
   • But making a duplicate for a lost key needs more imagination.
   • ‘Yes, and here's yours,’ the Boss responds, handing me a duplicate of my current ID card.
   • I gave him the dog-tag, he makes duplicates, he sells them now, and that really broke my heart because this is something sacred to me that I gave the boy.
   • The images are duplicates of prints by the early 20 th-century French photographer already in the museum's collection.
   • What if God were to collect the molecules sloughed off of my body and, during my lifetime, construct a duplicate of me from them: is it I, Lord?
   • The doppelgänger trees were duplicates of the eight-taxon focus tree with sites evolving at the same rates but independently of that tree.
   • Another similar statue was erected at the British Museum, and a duplicate of the statue was specially made in Britain and imported to sit by the new development.
   • Why buy expensive plastic duplicates of what grows naturally in the garden?
   • He has a secret duplicate of the key with which he is locked up at night.

   Synonyms

   copy, carbon copy, carbon, photocopy, facsimile, mimeo, mimeograph, reprint

2

3archaic A pawnbroker's ticket.

1Make or be an exact copy of.

〈喻〉他们未能取得他那样的成功。

一种复制不出也忘不了的独特气味。

1. 1.1 Make or supply copies of (a document)
   复印；复写（文件）
   information sheets had to be typed and duplicated

   情况通报须打字并复印。

   a duplicating machine

   复印机。

   Example sentencesExamples

   • Also, because no information is lost, duplicated or delivered out of order, command and status information would be reliable.
   • Digital images displayed on a computer screen lack the resolution of photographic prints but have the advantage of being more easily stored, duplicated, and delivered for study.
   • Labels are printed and disks are mastered and duplicated.
   • Friday sees the programme being finished, duplicated and about 150 copies hand stapled into the outer covers.
   • Because programs that have been copied once cannot be duplicated or edited digitally, editing the programs via a personal computer has become impossible.
   • Without a network of distributors and media organizations, video documentation was less easily duplicated and disseminated in the 1970s than it is today
   • Motion picture companies are concerned about digital content being transmitted, pirated, and duplicated illegally.
   • Here, too, the works are serialized or duplicated.
2. 1.2 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。

3. 1.3 Do (something) again unnecessarily.
   （无必要地）重复（某事）
   most of these proposals duplicated work already done

   这些建议中的大部分只是老调重弹。

   Example sentencesExamples

   • This duplicates a service already provided locally by councils and voluntary groups and is entirely unnecessary.
   • Some of the capacity indicators duplicate measurements already used elsewhere in the ESI.
   • If the requirement duplicates a condition already satisfied, it imposes a double burden on the provider of a service, and it therefore cannot be justified.
   • The Fund's monies will be spent over a three-year period and will not duplicate existing services already provided by the Home Office.
   • In Norway the government has banned new medicine which duplicates medicine already in use, therefore drug companies have no incentive for using animal experiments to develop medicine which they cannot sell.
   • Research that duplicates other work unnecessarily or which is not of sufficient quality to contribute something useful to existing knowledge is unethical
   • The center gets involved only if all significantly affected parties agree to its presence, and tries not to duplicate services already available.
   • To the extent that civil unions will duplicate marriage, then extending that privilege is clearly unnecessary.
   • We begin by doing a community profile to assess what the needs are in the area, because it's important not to duplicate services that already exist.
   • Is it the duty of an already stretched institution to duplicate the role of common rooms, to cut back the funding to its essential political role, and seek to maintain an unwieldy sabbatical structure?
   • Others said a united relief committee would duplicate machinery already in existence and might lead to confusion.
   • He denied it was duplicating work already being done by Hull Council, or repeating expensive studies done in the past.
   • Personally I couldn't care less about trying to duplicate effects that have already been achieved using the arcane language of electronics.
   • Now the president is saying, oh, well, we might give you tax relief if you will sign on to my prescription drug proposal, which duplicates coverage that's already provided.
   • Alliances create better communities which tap into the strength of their multiple institutions and decrease unnecessarily duplicated resources.
   • But he believes the project will simply duplicate work that police already carry out and says the money would be better spent on the street than on figures.
   • He said the exercise would not duplicate routine examinations already carried out by the District Auditor, Audit Commission and the Social Services Inspectorate.
   • The bill would also force the earth to devote its full attention to absorbing carbon dioxide and other greenhouse gases, rather than duplicating products already available from the private sector, he added.
   • While informative, there are many gaps when there is no information and a few times the text duplicates things already stated in the audio commentary.
   • First, we needed to ensure that all desired curricular outcomes were being addressed and that no outcomes were unnecessarily duplicated.