maintain

verb

1. 维持；保持
   to make sth continue at the same level, standard, etc.
   1. to maintain law and order/standards/a balance
      维持治安；保持水平 / 平衡
   2. The two countries have always maintained close relations.
      这两个国家一直保持着密切关系。
   3. She maintained a dignified silence.
      她一言不发，以保持尊严。
   4. to maintain prices (= prevent them falling or rising)
      维持价格的稳定
2. 维修；保养
   to keep a building, a machine, etc. in good condition by checking or repairing it regularly
   1. The house is large and difficult to maintain.
      房子很大，难以养护。
3. 坚持（意见）；固执己见
   to keep stating that sth is true, even though other people do not agree or do not believe it
   1. The men maintained (that) they were out of the country when the crime was committed.
      这几个男人坚持说案发时他们在国外。
   2. She has always maintained her innocence .
      她一直坚持说她是无辜的。
4. 供养；扶养
   to support sb/sth over a long period of time by giving money, paying for food, etc.
   1. Her income was barely enough to maintain one child, let alone three.
      她的收入养活一个孩子几乎都不够，更不用说三个了。

1. VERB 维持;保持
   If you maintain something, you continue to have it, and do not let it stop or grow weaker.
   1. The Department maintains many close contacts with the chemical industry...
      这个部门与化工行业保持着众多密切的联系。
   2. Push yourself to make friends and to maintain the friendships.
      要求自己与人交友并保持友谊。
   3. ...the emergency powers to try to maintain law and order.
      维持法律秩序的应急权力
2. VERB 断言;宣称;坚称
   If you say that someone maintains that something is true, you mean that they have stated their opinion strongly but not everyone agrees with them or believes them.
   1. He has maintained that the money was donated for international purposes...
      他坚称这笔捐款将用于国际用途。
   2. Prosecutors maintain no deal was made...
      原告坚持说不存在任何交易。
   3. 'Not all feminism has to be like this,' Jo maintains...
      “女性主义不必全然如此，”乔断言。
   4. He had always maintained his innocence.
      他始终坚称自己是无辜的。
3. VERB 保持，维持（在某一比率或水平上）
   If you maintain something at a particular rate or level, you keep it at that rate or level.
   1. The government was right to maintain interest rates at a high level.
      政府维持高利率的做法是正确的。
   2. ...action is required to ensure standards are maintained at as high a level as possible.
      要求采取行动确保标准维持在尽量高的水平上。
4. VERB 维修;保养
   If you maintain a road, building, vehicle, or machine, you keep it in good condition by regularly checking it and repairing it when necessary.
   1. ...a tough campaign to force authorities to maintain roads properly...
      迫使当局妥善维修道路的艰难斗争
   2. The house costs a fortune to maintain...
      维修这幢房子花销不菲。
   3. The cars are getting older and less well-maintained.
      车越来越旧，保养得也越来越差。
5. VERB 供养;赡养
   If you maintain someone, you provide them with money and other things that they need.
   1. He should pay and maintain you as well.
      他得给你钱，还得供养你。
   2. ...the basic costs of maintaining a child.
      抚养一个孩子的基本费用

1. He was arguing with the King about the need to maintain the cavalry at full strength
   他正和国王讨论保留骑兵全部力量的必要性。
2. This may help to maintain the gains you've made and to prevent backsliding.
   这或许有助于保持你所取得的进展，防止倒退。
3. Only by keeping down costs will America maintain its competitive advantage over other countries
   只有通过控制成本，美国才能保持对其他国家的竞争优势。
4. But in order to maintain a credible threat of intervention, we have to maintain a credible alliance.
   然而，为了保持确实有效的干预威胁，我们必须维持可靠的联盟。
5. They maintain a database of hotels that cater for businesswomen.
   他们维护着一个服务于商界女性的酒店资料库。
6. Germany and France pledged to maintain the differential between their two currencies.
   德国和法国承诺保持两国货币之间的差别汇率。
7. These economies will no doubt maintain their dominance of financial markets
   这些经济制度将毫无疑问地维持他们在金融市场上的主导权。
8. Their commitment was only to maintain the extent of forests, not their biodiversity.
   他们仅承诺维持现有森林面积，并不保证林区生物的多样性。
9. His critics maintain that he's responsible for many of Algeria's ills.
   他的批评者们坚持认为他应该为阿尔及利亚所面临的许多难题负责任。
10. But, in the interim, we obviously have a duty to maintain law and order
    但是，在过渡期间，我们显然有责任维护治安。
11. The Department maintains many close contacts with the chemical industry
    这个部门与化工行业保持着众多密切的联系。
12. Push yourself to make friends and to maintain the friendships.
    要求自己与人交友并保持友谊。
13. He has maintained that the money was donated for international purposes
    他坚称这笔捐款将用于国际用途。
14. Prosecutors maintain no deal was made
    原告坚持说不存在任何交易。
15. 'Not all feminism has to be like this,' Jo maintains
    “女性主义不必全然如此，”乔断言。
16. He had always maintained his innocence.
    他始终坚称自己是无辜的。
17. The government was right to maintain interest rates at a high level.
    政府维持高利率的做法是正确的。
18. The house costs a fortune to maintain
    维修这幢房子花销不菲。
19. He should pay and maintain you as well.
    他得给你钱，还得供养你。
20. He has the power to use force to maintain public order.
    他掌握着动用武力维持公共治安的权力。
21. The situation in the capital forced them to maintain military preparedness.
    首都的形势迫使他们时刻做好军事准备。
22. It expected to maintain production of cars at the same level as last year.
    预期今年汽车的产量会和去年持平。
23. The government has reaffirmed that it will take any steps necessary to maintain law and order.
    政府重申将采取一切必要措施维护法律和秩序。
24. The authorities have said they will attempt to maintain essential services.
    当局已表示他们将努力维持公共基础服务。
25. In order to maintain profit margins health and safety regulations are often put to one side.
    为了保持利润率，常置卫生和安全规章于不顾。
26. She may not have the money to maintain or restore her property
    她可能没有足够的钱来维护或修葺她的房产。
27. Even if we cannot agree, we should maintain our contact.
    即使我们不能取得一致，我们也要保持联系。
28. Our model is easy to operate and maintain.
    我们这个型号（的机器）很容易操作和保养。
29. Policemen preserve [ maintain] order in the streets.
    警察在街上维持秩序。
30. They maintain the closest relations with the masses and share their weal and woe.
    他们和群众血肉相连，休戚与共。

  maintain conserve preserve【导航词义：维护，保护】

  maintain v. 维护，保养

〔辨析〕指经常维修机器、建筑物等，使其保持良好状态。

  conserve v. 保护，保存

〔辨析〕较正式用词，通常指保护自然资源使其不发生改变或破坏。

  preserve v. 保护，保存

〔辨析〕指将某物完好地保存，通常用被动语态。

  assert contend maintain【导航词义：坚称】

  assert v. 坚决主张；断言

〔辨析〕含较强的主观意味，指坚决而明确地表示某事真实无误。

  contend v. 主张，声称

〔辨析〕指声称某事属实，含有与他人进行争辩的意思。

  maintain v. 坚持说，坚持认为

〔辨析〕指坚决维护某种主张或观点等。

verb

1. stick to correctly or closely
   1. The pianist kept time with the metronome
   2. keep count
   3. I cannot keep track of all my employees

   Synonym:    observekeep

2. support against an opponent
   1. The appellate court upheld the verdict

   Synonym:    uphold

3. state categorically

   Synonym:    assertasseverate

4. state or assert
   1. He maintained his innocence

   Synonym:    defend

5. maintain by writing regular records
   1. keep a diary
   2. maintain a record
   3. keep notes

   Synonym:    keep

6. supply with necessities and support
   1. She alone sustained her family
   2. The money will sustain our good cause
   3. There's little to earn and many to keep

   Synonym:    sustainkeep

7. maintain for use and service
   1. I keep a car in the countryside
   2. She keeps an apartment in Paris for her shopping trips

   Synonym:    keep

8. have and exercise
   1. wield power and authority

   Synonym:    wieldexert

9. keep in safety and protect from harm, decay, loss, or destruction
   1. We preserve these archeological findings
   2. The old lady could not keep up the building
   3. children must be taught to conserve our national heritage
   4. The museum curator conserved the ancient manuscripts

   Synonym:    conservepreservekeep up

10. keep in a certain state, position, or activity
    1. hold in place
    2. She always held herself as a lady
    3. The students keep me on my toes

    Synonym:    keephold