1. the quality of being unchanging and dependable
穩定不變、可靠的特質
The constancy of her support was a great comfort during difficult times.
在困難時期，她始終如一的支持是極大的安慰。
We rely on the constancy of the laws of physics.
我們依賴物理定律的恆常性。
Constancy Meaning（定義、用法、例句與發音）
constancy
noun
快速理解
What does "Constancy" mean?What are 2-3 core uses of "Constancy"?
Constancy refers to the quality of being unchanging, steady, or faithful over time.
- 1
Steadiness
EN: The quality of staying the same and not changing.
翻譯: 保持不變、穩定的特性。
- 2
Faithfulness
EN: Loyalty and firmness in one's relationships or beliefs.
翻譯: 對關係或信念的忠誠與堅定。
- 3
Persistence
EN: The fact of continuing to exist or happen over a long period.
翻譯: 在長時間內持續存在或發生的狀態。
小提醒：注意 'constancy' 通常描述抽象的特質（如忠誠、穩定），而非具體物體的物理恆定性。
發音（How to Pronounce "Constancy" in English）
How to pronounce "Constancy" in English?"Constancy" US vs UK pronunciation
點擊下方的 US / UK 按鈕可播放發音。
Real-life Examples of "Constancy" from YouTube Videos
Earth's mass extinctions | Peter Ward
TED
“Well, Don Brownlee, my friend, and I finally got to the point where we got tired of turning on the TV and seeing the spaceships and seeing the aliens every night and tried to write a counter-argument to it and put out: what does it really take for an Earth to be habitable, for a planet to be an Earth, to have a place where you could probably get not just life but complexity, which requires a huge amount of evolution and therefore constancy of conditions?”
(1 out of 2)
Definitions（定義）
What are the definitions of "Constancy"?How does "Constancy" change by context?
2. firmness of mind or purpose; faithfulness
意志或目標的堅定；忠誠
He admired her constancy in pursuing her goals despite numerous setbacks.
儘管遭遇無數挫折，他仍欽佩她追求目標的堅定不移。
Their love was tested but proved its constancy over the years.
他們的愛情經受考驗，並在歲月中證明了其忠貞不渝。
3. the state of being constant in occurrence or continuance
在發生或持續上保持不變的狀態
The constancy of the humming sound from the machine indicated it was running normally.
機器持續發出的嗡嗡聲表明它運轉正常。
Scientists measured the constancy of the star's brightness.
科學家測量了這顆恆星亮度的恆定性。
Grammar & Patterns（句型）
What are common sentence patterns for "Constancy"?How to make natural sentences with "Constancy"?
| Pattern | Meaning | Example |
|---|---|---|
| constancy of + noun | ...的恆常性 | The constancy of his support was a great comfort. (他支持的恆常性是一大慰藉。) |
| with constancy | 持之以恆地 | She practiced the piano with constancy, improving every day. (她持之以恆地練習鋼琴，每天都在進步。) |
| show constancy in + noun/gerund | 在...方面表現出恆心 | He showed remarkable constancy in his research efforts. (他在研究工作中展現出非凡的恆心。) |
| admire the constancy of + noun | 欽佩...的恆久不變 | I admire the constancy of her principles. (我欽佩她原則的恆久不變。) |
| a symbol of constancy | 恆常不變的象徵 | The North Star is often seen as a symbol of constancy. (北極星常被視為恆常不變的象徵。) |
用法說明
How is "Constancy" different from similar structures?What usage mistakes are common with "Constancy"?
constancy of vs constancy in
- constancy of + [名詞] 強調某種不變的「屬性」或「特質」本身，例如 constancy of purpose（目標的恆定性）。
- constancy in + [名詞/動名詞] 強調在「某個領域」或「某種行為」中表現出的恆心，例如 constancy in his efforts（他在努力上的堅持不懈）。
- 當後接抽象概念（如愛、支持）時，兩者有時可互換，但 constancy of 更偏向描述狀態，constancy in 更偏向描述行為表現。
對比例句： EN: Her constancy of affection was a source of great comfort. 翻譯: 她情感的恆久不變是極大的安慰來源。
EN:He was admired for his constancy in supporting the cause.
翻譯:他因對這項事業始終如一的支持而受人敬佩。
總結建議
一般來說，描述內在特質用 constancy of，描述具體行為領域的堅持則用 constancy in。
易混淆對比
What is the difference between "Constancy" and similar words?How to choose "Constancy" vs alternatives?
constancy vs consistency
「constancy」強調狀態或情感的持久不變，而「consistency」則強調行為、品質或邏輯的前後連貫與穩定。
constancy vs stability
「constancy」側重於情感或狀態的持續不變，而「stability」則強調系統、結構或情緒的穩固、不易動搖。
constancy vs persistence
「constancy」指狀態或情感的持續存在，而「persistence」則強調面對困難時堅持不懈的行動或努力。
口語用法
How is "Constancy" used in spoken English?What is the spoken vs formal difference for "Constancy"?
引述
在對話中，當引述或轉述他人對某人或某事的評價時，常用來描述其可靠的特質。 EN: "I really admire her constancy; she's been supporting the same charity for over a decade." 翻譯: 「我真的很佩服她的恆心；她支持同一個慈善機構已經超過十年了。」
EN:"His constancy as a friend is what got me through that tough time."
翻譯:「他作為朋友的那份堅定不移，幫助我度過了那段艱難時期。」
語氣強調
與形容詞或副詞連用，以加強語氣，凸顯持久性或穩定性的程度。 EN: "She showed remarkable constancy in her beliefs, never wavering under pressure." 翻譯: 「她在信念上展現出非凡的堅定，在壓力下從未動搖。」
EN:"The team's success relies on the constancy of their daily practice."
翻譯:「團隊的成功有賴於他們日復一日堅持不懈的練習。」
停頓填充
在組織思緒或尋找合適詞語時，可作為短暫的停頓填充詞，通常用於較正式的談話或討論中。 EN: "The key to their partnership is... constancy, I suppose, that mutual trust over the years." 翻譯: 「他們合作關係的關鍵是… 恆常性吧，我想，是這些年來彼此的信任。」
EN:"What we need in a leader is constancy—you know, a steady hand in times of change."
翻譯:「我們在領導者身上需要的是恆定性—你知道的，就是在變革時期能穩住局面。」
請注意：在正式書寫（如學術論文、商業報告）中，應避免將 "constancy" 用作停頓填充詞。建議使用更精確的學術或專業術語來闡述「穩定性」或「持久性」的概念。
常見短語
What common collocations use "Constancy"?What fixed phrases with "Constancy" should I remember?
constancy of purpose
constancy of [noun]
目標的恆定性；始終如一的目的
emotional constancy
[adjective] constancy
情感的穩定性；情緒的恆常
show constancy
verb + constancy
表現出恆心；展現堅持
lack of constancy
lack of + constancy
缺乏恆心；反覆無常
constancy in love
constancy in [noun]
愛情中的忠貞；愛的恆久
admire someone's constancy
verb + someone's constancy
欽佩某人的恆心
test of constancy
test of + constancy
對恆心的考驗
常見錯誤
What are common mistakes with "Constancy"?Which "Constancy" sentences look correct but are wrong?
×His constancy of love was admirable.
✓His constancy in love was admirable.
When describing the area in which someone shows constancy, use the preposition 'in' (constancy in something), not 'of'.
×We need constancy for our plan to succeed.
✓We need consistency for our plan to succeed.
'Constancy' emphasizes unwavering faithfulness or steadiness of purpose/feeling. 'Consistency' is the better choice for referring to uniformity and reliability in actions, quality, or performance over time.
×The constancy of the machine's output is fluctuating.
✓The consistency of the machine's output is fluctuating.
Describing something that is 'fluctuating' contradicts the core meaning of 'constancy' (steadfast, unchanging). Use 'consistency' when discussing measurable performance or results that can vary.
×She showed a great constancy.
✓She showed great constancy.
'Constancy' is usually an uncountable noun when referring to the quality itself. The indefinite article 'a' is not typically used before it unless it is being modified in a specific way (e.g., 'a remarkable constancy').
×The data shows constancy with our hypothesis.
✓The data shows consistency with our hypothesis.
The fixed phrase is 'consistency with' when indicating agreement or compatibility between things. 'Constancy' is not used in this collocation.
×He is constancy to his principles.
✓He is constant to his principles.
'Constancy' is a noun. To describe a person possessing this quality, use the adjective 'constant' (steadfast, faithful).
詞形變化
What are the word forms of "Constancy"?What are tense/participle forms of "Constancy"?