听声词典

exact

E 开头单词

音标发音

  • 英式音标 [ɪg'zækt; eg-]
  • 美式音标 [ɪɡˈzækt]
  • 英式发音
  • 美式发音

基本解释

  • adj. 准确的，精密的；精确的
  • vt. 要求；强求；急需
  • vi. 勒索钱财

词源解说

  • 直接源自古典拉丁语的exactus(exigere的过去分词）：ex (出去） + agere (开，导向），意为向外导向，完成。

词根记忆

  • ex(出) + act(做)→要做就要做出精确的结果→精确的
  • ex(出) + act(做)→做出精确的结果→精确的
  • ex(出) + act(做)→都出来干活，急需人手→急需
  • ex(表加强) + act(做)→努力做出精确的结果→精确的

同根派生

  • adj性质的同根词
    exacting：严格的；苛求的；吃力的。
  • adv性质的同根词
    exactly：恰好地；正是；精确地；正确地。
  • n性质的同根词
    exactitude：正确，精确；严格，规规矩矩。
    exaction：强求；勒索；榨取；苛捐杂税。
    exactness：正确；精确。
  • v性质的同根词
    exacting：逼取；急需（exact的ing形式）。

用法辨析

    adj. (形容词)

  • exact作形容词是“准确的,确切的,精确的”的意思,指数量、品质等不多不少,刚好与事实或标准相符,强调丝毫不差。exact引申还可作“严谨的,严格的”解,一般指的是人做事时严谨的态度。
  • exact在句中用作定语或表语。与in连用,表示“在…方面准确〔严谨〕”。
  • exact无比较级和最高级形式。

    • v. (动词)

  • exact的基本意思是“要求”“索取”,一般指“硬性要求”“强求”。
  • exact只用作及物动词,接名词作宾语。常与介词from连用,表示“向(某人)征收〔索取〕…”“迫使(某人)处于某种状态”。

英汉例句

    用作形容词 (adj.)

    用作定语: ～+ n.

  • Your exact height is 1.65 meters.
    你的准确身高是1.65米。

    • 用作表语: S+be+～

  • His memory is very exact; he never makes mistakes.
    他的记忆非常准确,从不出错。

    • S+be+～+in n./pron.

  • He is exact in his use of words.
    他用词确切。

    • 用作动词 (v.)

    用作及物动词: S+～+ n./pron.

  • The job exacts care and attention.
    这项工作需要谨慎和集中精力。

词组短语

    用作形容词 (adj.)

    ～+名词

  • exact amount 精确的数量
  • exact description 精确的描述
  • exact disciplinarian 严格的实施纪律者
  • exact instruments 精密的仪器
  • exact likeness 酷似

英英字典

    剑桥英英字典

  • in great detail, or complete, correct, or true in every way
  • to demand and get something, sometimes using force or threats

    • 柯林斯英英字典

  • Exact means correct in every detail. For example, an exact copy is the same in every detail as the thing it is copied from.
  • exactly
  • You use exact before a noun to emphasize that you are referring to that particular thing and no other, especially something that has a particular significance.
  • exactly
  • When someone exacts something, they demand and obtain it from another person, especially because they are in a superior or more powerful position.
  • If someone exacts revenge on a person, they have their revenge on them.
  • If something exacts a high price, it has a bad effect on a person or situation.
  • &rarrsee also exactly
  • You say to be exact to indicate that you are slightly correcting or giving more detailed information about what you have been saying.

专业释义

    数学

  • 正合

    Pashall and Scott have studied the structure of the recollement in a triangulated category (cf. 3), there the recollement means to decompose one triangulated category into two triangulated categories which are related by some good exact functors (cf.
    Pashall和Scott在3中研究了三角范畴的recollement的结构问题,即将一个已知的三角范畴“分解”为两个三角“子”范畴,并且这两个“子”范畴与原来的已知范畴有一些好的正合函子联系,也见(5,6和12)。

    经济学

  • 确切的

    • 电子、通信与自动控制技术

  • 精确的