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BNC: 4459 COCA: 4486
weaken
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verb /ˈwiːkən/
present tense
I/you/we/theyweaken
he/she/itweakens
present participleweakening
past tenseweakened
past participleweakened
  1. 1
    [I/T] to make someone physically less strong and healthy, or to become less strong and healthy （使）变虚弱；（使）衰弱

    Stress can weaken the immune system. 紧张会减弱免疫系统的功能。

    She began to weaken after running for 8 miles. 她跑了8英里后开始变得虚弱。

     Synonyms and related words
    To cause someone to have an illness or feel ill: cause, give, pass on...
    1. a.
      to make a structure more likely to break, or to become more likely to break （使）变得更易断裂；（使）脆弱

      Many buildings had already been weakened by last year's storms. 许多建筑物由于去年的风暴已经变得摇摇欲坠。

       Synonyms and related words
      To become, or to make something weaker: lessen, reduce, subside...
       Synonyms and related words
      To damage or spoil something: damage, spoil, mark...
    Collocates: weaken
    Adverbs frequently used with weaken
    ▪  considerably, fatally, further, seriously, severely
  2. 2
    [I/T] to make someone or something less powerful or important, or to become less powerful or important （使）变弱；削弱

    A peace deal between Israel and Lebanon would have weakened Syria's influence in the region. 如果以色列和黎巴嫩先前达成和平协议，可能会削弱叙利亚在这一地区的影响。

     Synonyms and related words
    To be unimportant: weaken, fade, lessen...
  3. 3
    [T] to make someone less determined or less certain 使（某人）动摇；使（某人）犹豫不决

    If your facts are wrong, that's going to weaken your case. 如果你的事实有误，你的案子会难以胜诉。

    weaken someone's resolve/morale/resistance/spirit :

    No amount of violence will weaken our resolve. 任何暴力行为都不会动摇我们的决心。

     Synonyms and related words
    To make someone feel disappointed or less hopeful: disappoint, let down, discourage...
    1. a.
      [I] if someone weakens about an opinion or a decision, they become less certain about it （某人）动摇，犹豫不决:

      In the end I weakened and agreed to go. 最后我动摇了，并同意去。

       Synonyms and related words
      To change your opinion, attitudes or behaviour: change your mind, see reason/sense, adapt...
  4. 4
    [I] if prices weaken, they fall （价格）下跌
     Synonyms and related words
    Price behaviour: bounce, come down, cool off...
BNC: 4459 COCA: 4486
weaken

verb

ADVERB | VERB + WEAKEN ADVERB➤considerably, greatly, seriously, severely, significantly, substantially大大地削弱；嚴重地減弱；使明顯地衰弱；實質上削弱➤badly嚴重地削弱◇The military was badly weakened by the sanctions.軍隊因制裁而受到嚴重削弱。➤fatally致命地削弱◇The regime was fatally weakened by the unrest and violence.社會動盪和暴力活動使這一政權遭到了致命性的削弱。➤dramatically極大地削弱◇exchange rates that dramatically weakened the dollar導致美元大幅貶值的匯率➤further進一步削弱▸➤slightly, somewhat稍微削弱；某種程度上減弱▸➤gradually, progressively, steadily逐漸地削弱；持續地削弱◇Central authority has been progressively weakened since the outbreak of the civil war.內戰爆發後，中央權力被逐漸削弱了。➤permanently永久地削弱➤eventually, ultimately最終削弱◇The storm eventually weakened.暴雨終於減弱了。VERB + WEAKEN➤begin to, start to開始衰弱➤continue to繼續衰弱◇The British pound continued to weaken against the dollar.英鎊兌美元繼續走弱。➤serve to導致削弱◇The judgement serves to weaken public confidence in the courts.這個判決導致公眾對法院的信心下降。➤attempt to, try to試圖削弱▸➤tend to趨向衰弱➤threaten to威脅要削弱▸➤be designed to旨在削弱◇a move designed to weaken the rebels旨在削弱叛亂分子力量的行動
BNC: 4459 COCA: 4486
weaken verb
⇨ weaken (weaken sb's position) ⇨ tire (Her legs began to weaken.) ⇨ undermine (weaken sb's resolve) ⇨ worsen (sb's authority weakens) weaken

verb

  ➡ See also the entry for worsen 另见worsen条weaken ♦︎ make sth worse ♦︎ add to sth ♦︎ compound ♦︎ exacerbate ♦︎ aggravateThese words all mean to make sb/sth weaker or worse in some way. 这些词均表示使更虚弱、使恶化。PATTERNS AND COLLOCATIONS 句型和搭配◆to add to / compound / exacerbate / aggravate a problem◆to add to / compound / exacerbate / aggravate worries / concerns◆to add to / exacerbate / aggravate tensions◆to compound / exacerbate / aggravate a situation◆to make a problem / a situation worse◆to seriously weaken / add to / compound / exacerbate / aggravate sth◆to greatly weaken / add to / exacerbate / aggravate sth◆to only add to / compound / exacerbate / aggravate sth◆to only make sth worse■ weaken [transitive] (rather formal) to make sb/sth less strong or powerful 使虚弱；削弱◆The team has been weakened by injury.该队因伤实力减弱。◆The new evidence weakens the case against her.新的证据削弱了指控她的案由。◆This new story has severely weakened the President's position.这条新闻严重削弱了总统的地位。 OPP strengthen ⇨ strengthen ■ make sth ˈworse

phrase

(made, made) (rather informal) to cause a problem or situation to be more difficult or less hopeful than it was before 使（问题或形势）更糟；使恶化◆Don't tell her that－you'll only make things worse.别把这件事告诉她－你只会火上浇油。◆To make matters worse, the value of homes has dropped dramatically.更糟糕的是，房产价值急剧下降。■ ˈadd to sth

phrasal verb

to make a problem or bad feeling worse by introducing new difficulties to the situation 使（问题或不良情绪）更糟；使恶化◆The bad weather only added to our difficulties.恶劣的天气使我们的处境愈加困难。■ compound kəmˈpaʊnd [transitive, often passive] (rather formal, written) to make a problem, situation or feeling worse or more extreme by introducing new difficulties or facts 使（问题、形势或情绪）加重；使恶化◆The problems were compounded by severe food shortages.严重的食品短缺使问题恶化。■ exacerbate ɪgˈzæsəbeɪt; NAmE ɪgˈzæsərbeɪt [transitive] (formal) to make an illness, problem or difficult situation worse 使（病情、问题或困难）恶化；加重◆The symptoms may be exacerbated by certain drugs.这些症状可能会因为某些药物而加重。◆His aggressive reaction only exacerbated the situation.他的挑衅行为只会使情况恶化。 OPP alleviate ⇨ ease ■ aggravate ˈægrəveɪt [transitive] (formal) to make an illness, problem or difficult situation worse 使（病情、问题或困难）恶化；加重◆He aggravated an old shoulder injury during the win against Chelsea.他在击败切尔西的比赛中加剧了肩上的旧伤。◆Military intervention will only aggravate the conflict even further.军事干预只会使冲突进一步恶化。OPP alleviate ⇨ ease NOTE 辨析 Exacerbate or aggravate?There is very little difference in meaning or use between these words. However, aggravate collocates much more strongly with injury. 这两个词在含义和用法上差别很小，但是与injury搭配时大多用aggravate◆He exacerbated an old shoulder injury.

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