effective

B1 CET-4 Oxf 3000 大学 FREQ #4098 ★★★★☆

a. 有效的, 有力的, 实际的 n. 有生力量

发音

US /ɪˈfɛktɪv/
AU /əˈfektɪv/

词形变化

effectives 复数 effectives more effective 比较级 most effective 最高级

别名

eff. triple-E

教材释义与例句

形容词

有效的，起作用的；实际的，实在的；给人深刻印象

释义与例句

n.
  1. 1.

    a soldier fit for duty

    政治 军事
adj. B1 Oxf 3000
  1. 1.

    Having the power to produce a required effect or effects.

    The pill is an effective method of birth control.

    1923, Ernest Bramah, The Eyes of Max Carrados "Capital idea; we'll go together and complain: two will be more effective," suggested Mr. Belting.

  2. 2.

    Producing a decided or decisive effect.

    The president delivered an effective speech!

  3. 3.

    Efficient, serviceable, or operative, available for useful work.

    How long does it take to make a bunch of civilians an effective military force?

    My effective income after taxes and child support is $500 a month.

    The effective radiated power is determined by multiplying the transmitter power output with the antenna gain.

    The effective voltage of an alternating current is 0.7 times its peak voltage.

  4. 4.

    Actually in effect.

    effective immediately

    The curfew is effective at midnight.

  5. 5.

    Having no negative coefficients.

    数学
  6. 6.

    Such that no group element acts trivially.

    数学
  7. 7.

    approximate; Not describing the fundamental dynamic changes in some system as they happen.

    物理

词汇关系

形容词

同义词 5

good efficient in effect effectual efficacious

反义词 1

ineffective

近义相关 10

telling actual impressive operational operative competent hard-hitting existent efficacious impelling

参见 8

strong powerful useful stiff efficient potent efficacious utile

相关短语

effective energy effective dose effective radiated power [电] 有效幅射功率 effective stack size effective stack sizes effective energies effective doses effective radiated powers effective nuclear charge [化] 有效核电荷 effective nuclear charges effective compression effective altruism effective altruist effective altruists

词源

From French effectif, from Latin effectīvus (“productive; effective”), from efficiō (“to make; to bring about”), equivalent to effect + -ive.

来源：wiktionary