1. happening or moving very quickly
發生或移動得非常快的
The company has seen rapid growth in the past year.
這家公司在過去一年經歷了快速的成長。
She made rapid progress in learning the language.
她在學習語言方面取得了快速的進步。
Rapid Meaning（定義、用法、例句與發音）
rapid
adjective
快速理解
What does "Rapid" mean?What are 2-3 core uses of "Rapid"?
形容事物發生或進行的速度非常快。
- 1
速度極快
EN: happening or moving very quickly
翻譯: 指動作、過程或變化以極快的速度發生或進行。
- 2
短時間內完成
EN: accomplished in a very short time
翻譯: 指某項任務、發展或進步在很短的時間內就完成或實現。
- 3
急流
EN: a part of a river where the water flows very fast
翻譯: 指河流中水流湍急、速度很快的河段。
小提醒：「rapid」強調的是速度本身「快」，而「fast」除了速度，有時也指能持續高速運動的能力。描述「快速成長」或「迅速變化」時，常用「rapid growth/change」。
發音（How to Pronounce "Rapid" in English）
How to pronounce "Rapid" in English?"Rapid" US vs UK pronunciation
點擊下方的 US / UK 按鈕可播放發音。
Real-life Examples of "Rapid" from YouTube Videos
Eduardo Paes: The 4 commandments of cities
TED
“It's the BRT, the Bus Rapid Transit. So you get a bus. It's a simple bus that everybody knows.”
(1 out of 30)
Definitions（定義）
What are the definitions of "Rapid"?How does "Rapid" change by context?
2. done in a very short time
在極短時間內完成的
We need a rapid response to this emergency.
我們需要對這次緊急事件做出迅速的回應。
The doctor performed a rapid assessment of the patient's condition.
醫生對病人的狀況進行了快速的評估。
3. (of a slope) descending steeply
（指斜坡）陡峭下降的
The river flows through a series of rapid descents.
這條河流經一系列陡峭的急降段。
The trail includes a rapid climb up the mountain.
這條步道包含一段陡峭的上山路段。
4. characterized by great speed or velocity
以高速或快速為特徵的
The rapid development of technology is changing our lives.
科技的快速發展正在改變我們的生活。
He has a rapid pulse, which is a cause for concern.
他的脈搏很快，這令人擔憂。
Grammar & Patterns（句型）
What are common sentence patterns for "Rapid"?How to make natural sentences with "Rapid"?
| Pattern | Meaning | Example |
|---|---|---|
| rapid + noun | 快速的… | The company experienced rapid growth. (公司經歷了快速的成長。) |
| rapid + change/development/increase | 迅速的變化/發展/增加 | We need to adapt to the rapid changes in technology. (我們需要適應科技的迅速變化。) |
| at a rapid pace/rate | 以快速的步調/速度 | The city is expanding at a rapid pace. (這座城市正以快速的步調擴張。) |
| be rapid | 是迅速的 | His recovery from the surgery was remarkably rapid. (他手術後的恢復異常迅速。) |
| more/less rapid than... | 比…更快/慢 | The progress was less rapid than we had hoped. (進展比我們希望的要慢。) |
用法說明
How is "Rapid" different from similar structures?What usage mistakes are common with "Rapid"?
rapid doing vs rapid to do
- "rapid doing" 通常描述一個正在進行或持續的快速過程或動作。
- "rapid to do" 則強調完成某個特定動作或達到某個狀態的速度很快。
- 在描述一個系統、反應或變化時，兩者有時可互換，但 "rapid doing" 更側重過程，"rapid to do" 更側重結果。
- 在正式的技術或學術寫作中，"rapid doing" 可能更為常見。 EN: The company is known for its rapid expansion into new markets. 翻譯: 這家公司以其快速擴張到新市場而聞名。
EN:This software is rapid to install on most computers.
翻譯:這款軟體在大多數電腦上安裝起來都很快。
總結建議
在描述一個持續的快速過程時，使用 "rapid doing"；強調完成某個動作的速度時，則使用 "rapid to do"。
易混淆對比
What is the difference between "Rapid" and similar words?How to choose "Rapid" vs alternatives?
rapid vs fast
「rapid」強調變化或進程的「速度極快」，常指突然或短時間內完成；「fast」則更通用，指物體移動或事情進行的「速度快」。
rapid vs quick
「rapid」側重於過程或一系列動作的「整體高速度」；「quick」則強調「反應或完成單一動作所需的時間極短」。
rapid vs swift
「rapid」強調速度本身「快」；「swift」則在「快」的基礎上，還帶有「流暢、敏捷、不遲疑」的文學或修辭色彩。
口語用法
How is "Rapid" used in spoken English?What is the spoken vs formal difference for "Rapid"?
引述
在重複或引述他人話語時，用來強調速度之快。 EN: He said the changes were "rapid" and irreversible. 翻譯: 他說這些變化是「迅速的」且不可逆轉的。
EN:Her review called the growth "rapid" and unexpected.
翻譯:她的評論稱這種增長是「快速的」且出乎意料。
語氣強調
在口語中加重語氣，表達速度遠超預期或常態。 EN: That was a rapid recovery, I'm telling you! 翻譯: 那恢復得超快，真的！
EN:We need a rapid response, like, yesterday!
翻譯:我們需要一個超快的回應，最好是昨天就有！
停頓填充
在思考或組織語句時，作為短暫的填充詞，帶有強調後續內容的意味。 EN: The process was... rapid, but also quite thorough. 翻譯: 這個過程是…迅速的，但同時也相當徹底。
EN:It's a, you know, rapid shift in the market trends.
翻譯:這是一個，你知道的，市場趨勢的快速轉變。
正式寫作注意：在學術、商業或正式報告中，應避免將 "rapid" 用於引述或填充停頓等口語化結構。建議使用更標準的句式，例如 "a rapid increase was observed"，以保持文體的嚴謹與客觀。
常見短語
What common collocations use "Rapid"?What fixed phrases with "Rapid" should I remember?
rapid growth
adjective + noun
快速的增長
rapid change
adjective + noun
迅速的變化
rapid response
adjective + noun
快速回應
rapid development
adjective + noun
快速發展
rapid-fire
compound adjective
連珠炮似的；快速的
at a rapid pace
prepositional phrase
以快速的步調
rapid transit
adjective + noun
快速運輸（系統）
rapid eye movement
adjective + noun + noun
快速動眼（睡眠階段）
常見錯誤
What are common mistakes with "Rapid"?Which "Rapid" sentences look correct but are wrong?
×The company made a rapid progress.
✓The company made rapid progress.
The word 'progress' is an uncountable noun. We do not use the indefinite article 'a' before 'rapid progress'.
×He is a rapid runner.
✓He is a fast/quick runner.
'Rapid' is typically used to describe processes, changes, or movements of things (e.g., growth, development, fire), not the inherent speed of a person. For people, 'fast' or 'quick' is more natural.
×Please give me a rapid answer.
✓Please give me a quick/prompt answer.
While 'rapid' means fast, it sounds unnatural when requesting a speedy reply from someone. 'Quick', 'prompt', or 'speedy' are more idiomatic in this context.
×The car moved too rapid.
✓The car moved too rapidly.
'Rapid' is an adjective and must modify a noun. To modify a verb ('moved'), the adverb 'rapidly' must be used.
×It was a rapid decided action.
✓It was a rapidly decided action.
Here, the word 'decided' is a past participle functioning as an adjective. The adjective 'rapid' cannot modify another adjective. The adverb 'rapidly' is needed to modify the participle 'decided'.
詞形變化
What are the word forms of "Rapid"?What are tense/participle forms of "Rapid"?