quantum leap

IPA/ˌkwɒntəm ˈliːp/
IPA/ˌkwɑːntəm ˈliːp/

quantum leap — 名詞

1. a very large and important improvement in the quality, success, or effectiveness

1.名詞B2
釋義

重大突破

在品質或成效上的巨大進步

a very large and important improvement in the quality, success, or effectiveness of something — for example, a business whose sales double in a single month or a medical treatment that cuts the death rate from a disease by half.

例句

The new vaccine was a quantum leap in the fight against the disease.

這種新疫苗是對抗該疾病的一項重大突破。

quantum leap + in + field/area

After Isabela started working with a tutor, her test results showed a quantum leap.

Isabela 開始接受家教輔導後，她的測驗成績出現了巨大躍進。

常見搭配
  • a quantum leap in quality
  • a quantum leap in performance
  • make a quantum leap
  • represent a quantum leap
  • a quantum leap forward
同義詞
  • breakthrough

    focuses on overcoming a specific obstacle or barrier

  • giant step forward

    more informal; common in business and sports contexts

  • major advance

    slightly less dramatic; suggests steady progress rather than a sudden jump

反義詞
  • setback

    a change that makes things worse, not better

  • decline

    a move in the opposite direction

文法句型

a quantum leap + in + noun phrase

make a quantum leap

be a quantum leap

用法筆記

Subject is often an area of activity such as medicine, technology, or education — the field where the big improvement happens, named after 'in'. Common verbs: make, represent, be.

常見錯誤

The new system was a quantum leap of productivity.
The new system was a quantum leap in productivity.
'quantum leap' is followed by 'in', not 'of', to show the area that improved.

2. a sudden, sharp change from one state or level to a much higher or more advanced

2.名詞B2
釋義

飛躍

從原有水準快速大幅提升

a sudden, sharp change from one state or level to a much higher or more advanced one in a single step, especially after a period when progress was slow or steady.

例句

The country made a quantum leap from a farming economy to a high-tech centre in ten years.

該國在短短十年內就從農業經濟轉型為高科技中心，實現了飛躍性的發展。

quantum leap + from + X + to + Y

Owen's understanding of chemistry took a quantum leap after he joined the advanced class.

Owen 開始上進階課程後，他對化學的理解有了飛躍性的進步。

常見搭配
  • a quantum leap from...to...
  • a quantum leap in understanding
  • make a quantum leap
  • a quantum leap forward
同義詞
  • leap

    shorter and less dramatic; can describe any big jump

  • sudden advance

    emphasises the speed of the change

  • transformation

    suggests a complete change in the nature of something

反義詞

文法句型

a quantum leap + from + starting point + to + end point

用法筆記

Frequently followed by 'from...to...' to describe the starting and ending points of the change. The emphasis is on the suddenness and scale of the jump, not just the positive outcome.

常見錯誤

There was a quantum leap of students enrolling this year.
There was a quantum leap in the number of students enrolling this year.
'quantum leap' describes a quality or level, not a quantity directly attached with 'of'.

同根字

常見搭配

名詞搭配

常用片語

  • make a quantum leap
  • represent a quantum leap
  • be a quantum leap
  • a quantum leap forward

介系詞搭配