1. to arrange or organize things into groups based on shared characteristics
根據共同特徵將事物分組或整理
The librarian classified the books according to their genres.
圖書館員根據書籍的類型進行分類。
Scientists classify animals into different species.
科學家將動物分類為不同的物種。
Classified Meaning（定義、用法、例句與發音）
classified
verb
快速理解
What does "Classified" mean?What are 2-3 core uses of "Classified"?
「classified」作為動詞，主要指將資訊或物品根據特定系統進行分級、歸類或標示為機密。
- 1
分類、歸類
EN: to arrange things into groups based on shared characteristics
翻譯: 根據共同特徵將事物分組整理。
- 2
標示為機密
EN: to officially designate information as secret and restricted
翻譯: 將資訊正式指定為秘密並限制存取。
- 3
分級、分等
EN: to assign a grade or rank within a system
翻譯: 在一個系統內指定等級或排名。
小提醒：注意「classified」作形容詞（如「classified ads」分類廣告）和作動詞（如「The document was classified」文件被列為機密）的用法差異很大，容易混淆。
發音（How to Pronounce "Classified" in English）
How to pronounce "Classified" in English?"Classified" US vs UK pronunciation
點擊下方的 US / UK 按鈕可播放發音。
Real-life Examples of "Classified" from YouTube Videos
Why are these 32 symbols found in caves all over Europe | Genevieve von Petzinger | TED
TED
“The irony in all of this, of course, is that, having just carefully classified all of the signs into a single category.”
(1 out of 7)
Definitions（定義）
What are the definitions of "Classified"?How does "Classified" change by context?
2. to designate information as officially secret or restricted
將資訊指定為官方機密或限制級
The government classified the military documents as top secret.
政府將該軍事文件列為最高機密。
That report is classified and cannot be shared with the public.
那份報告是機密的，不能向公眾公開。
3. to assign to a particular category, especially in a formal system
將某事物歸入特定類別（尤指在正式系統中）
The new drug was classified as a controlled substance.
這種新藥被歸類為管制物質。
How would you classify this type of artistic style?
你會如何歸類這種藝術風格？
Grammar & Patterns（句型）
What are common sentence patterns for "Classified"?How to make natural sentences with "Classified"?
| Pattern | Meaning | Example |
|---|---|---|
| classify + noun | 將…分類 | The librarian will classify the new books. (圖書管理員會將新書分類。) |
| classify + noun + as + noun/adjective | 將…歸類為… | Biologists classify whales as mammals. (生物學家將鯨魚歸類為哺乳動物。) |
| classify + noun + into + noun | 將…分成… | The data was classified into three main groups. (這些數據被分成三個主要類別。) |
| be classified + as + noun/adjective | 被歸類為… | This document is classified as top secret. (這份文件被歸類為最高機密。) |
| be classified + by + noun | 按…分類 | The products are classified by size and color. (產品按尺寸和顏色分類。) |
用法說明
How is "Classified" different from similar structures?What usage mistakes are common with "Classified"?
classified as doing vs classified to do
- "classified as doing" 用於描述某事物被歸類為具有某種持續性或特徵性的行為或狀態。
- "classified to do" 則用於表示某事物被歸類的目的是為了執行某個具體的、未來的或一次性的任務。
- 在正式或學術寫作中，"classified as + 名詞/形容詞" 是最常見且最安全的結構。 EN: The document was classified as containing sensitive information. 翻譯: 這份文件被歸類為包含敏感資訊。
EN:This software is classified to handle encrypted communications.
翻譯:這款軟體被歸類為用於處理加密通訊。
總結建議
在大多數情況下，使用 "classified as + 名詞/形容詞" 來描述歸屬的類別，而 "classified to + 動詞" 則較為少見，通常用於特定目的或功能的官方分類。
易混淆對比
What is the difference between "Classified" and similar words?How to choose "Classified" vs alternatives?
classified vs categorize
「classified」強調根據機密等級或特定標準進行分級與限制存取，而「categorize」則是一般性地將事物分門別類。
classified vs sort
「classified」著重於根據標準或等級進行系統性歸類（常帶有機密或正式色彩），而「sort」則更通用，常指按大小、種類等進行整理或挑選。
classified vs organize
「classified」特指按類別或等級進行歸類（尤指定密），而「organize」含義更廣，指使事物有條理、有系統，包括規劃、安排等。
口語用法
How is "Classified" used in spoken English?What is the spoken vs formal difference for "Classified"?
引述
在對話中，當引述他人對資訊的處理方式時，常用過去式或現在完成式。 EN: "He said the documents were classified, so I couldn't see them." 翻譯: 他說那些文件是機密的，所以我不能看。
EN:"I've heard they've classified the whole project as top secret."
翻譯:我聽說他們把整個計畫列為最高機密了。
語氣強調
在非正式對話中，有時會用被動語態或誇張說法來強調資訊的敏感性。 EN: "This is so classified, even I don't know the details." 翻譯: 這機密到連我都不知道細節。
EN:"Don't tell anyone—it's classified information!"
翻譯:別告訴任何人——這可是機密資訊！
停頓填充
在思考如何描述資訊的敏感等級時，可能會用此詞作為停頓或填充語。 EN: "The report is... well, classified, so I can't go into specifics." 翻譯: 那份報告...嗯，是機密的，所以我不能講得太具體。
EN:"It's kind of... classified? Let's just say it's sensitive."
翻譯:這有點...算是機密嗎？就說是敏感資訊吧。
正式寫作注意：在正式或學術寫作中，應避免將 "classified" 用於上述口語的停頓或誇張語氣。正式文體中，此詞應精確用於描述官方指定的保密等級，並使用標準的動詞時態與語態。
常見短語
What common collocations use "Classified"?What fixed phrases with "Classified" should I remember?
classified as
be classified as [category/type]
被歸類為，被劃分為
classified into
be classified into [categories/groups]
被分為，被劃分成
classified by
be classified by [criterion/method]
根據...分類，按...劃分
classified according to
be classified according to [system/principle]
根據...進行分類
classified under
be classified under [heading/code]
歸於...項下，列在...類別中
classified broadly
be classified broadly as
被大致歸類為
difficult to classify
be difficult to classify
難以分類
常見錯誤
What are common mistakes with "Classified"?Which "Classified" sentences look correct but are wrong?
×The documents are classified by the officer yesterday.
✓The documents were classified by the officer yesterday.
當描述過去發生的分類動作時，應使用過去式 'were classified'，而非現在式 'are classified'。
×The librarian classified the books into categories.
✓The books were classified into categories (by the librarian).
當強調被分類的物件（如書籍）而非執行分類的人時，更常使用被動語態。主動語態雖文法正確，但在正式或學術語境中較不自然。
×This information is classified for top secret.
✓This information is classified as top secret.
表達將某事物歸入某個類別或等級時，應使用介系詞 'as'，而非 'for'。'as' 在此表示「作為…類別」。
×He works with classified document.
✓He works with classified documents. / He is classifying the documents.
'Classified' 在此為形容詞，意為「機密的」，修飾名詞 'documents'（應為複數或帶冠詞）。若想表達「正在分類」的動作，應使用動詞形式 'is classifying'。兩者意思不同，不可混淆。
×The system can classify quickly.
✓The system can classify data quickly.
及物動詞 'classify' 通常需要一個受詞（被分類的事物）。除非上下文已明確指出受詞，否則句子聽起來不完整。
×We need to classify the meeting for next week.
✓We need to schedule the meeting for next week.
'Classify' 意指「按特徵系統性地分類、歸檔或分級」，而非「安排時間」。安排會議應使用 'schedule', 'arrange', 或 'plan'。
詞形變化
What are the word forms of "Classified"?What are tense/participle forms of "Classified"?
classifies(3rd_singular)classifying(present_participle)classified(past)classified(past_participle)