1
a flea
flea 是可数名词，表示单只跳蚤时用 a flea。
I found a flea in the dog's fur.
我在狗的毛里发现了一只跳蚤。
跳蚤；蚤
先理解核心含义，再看它在真实句子里的用法。
跳蚤；蚤
a small wingless parasitic insect that feeds on blood and is known for its ability to jump
I found a flea in the dog's fur.
我在狗的毛里发现了一只跳蚤。
一种小型、无翅、寄生性昆虫,属于蚤目,以吸血和跳跃能力著称。
A small, wingless, parasitic insect of the order Siphonaptera, renowned for its bloodsucking habits and jumping abilities.
任何无翅吸血寄生昆虫,以跳跃能力著称
any wingless bloodsucking parasitic insect noted for ability to leap
Our cat keeps scratching because it has fleas.
我们的猫因为长跳蚤而一直挠痒痒。
I found a flea on the dog's back and removed it quickly.
我在狗背上发现了一只跳蚤，并迅速把它弄掉了。
The old mattress was full of fleas, so we threw it away.
旧床垫里满是跳蚤，所以我们把它扔了。
flea 是可数名词，表示单只跳蚤时用 a flea。
I found a flea in the dog's fur.
我在狗的毛里发现了一只跳蚤。
flea 可作定语修饰名词，构成复合名词，如 flea market（跳蚤市场）。
We bought some old books at a flea market.
我们在跳蚤市场买了一些旧书。
指被跳蚤大量侵扰时，常用 be infested with fleas，flea 用复数。
The abandoned house was infested with fleas.
那栋废弃的房子里满是跳蚤。
Not this
The dog has flea.
Use this
The dog has fleas.
flea 是可数名词，指跳蚤时通常用复数形式。汉语名词没有数的变化，所以容易漏掉复数词尾 -s。
Not this
I saw a flee on the cat.
Use this
I saw a flea on the cat.
flea（跳蚤）是名词，拼作 f-l-e-a；flee（逃跑）是动词，拼作 f-l-e-e。两词同音，但词性和意思不同，表示虫子时应用 flea。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
跳蚤市场
We bought these old chairs at a flea market.
我们在跳蚤市场买了这些旧椅子。
跳蚤叮咬
My leg is covered in flea bites.
我的腿上满是跳蚤咬的包。
防蚤项圈
Our cat wears a flea collar.
我们的猫戴着防蚤项圈。
跳蚤成灾
The old house had a serious flea infestation.
那栋老房子跳蚤成灾。
犬蚤
Dog fleas can also bite humans.
狗跳蚤也会咬人。
跳蚤马戏团
A flea circus was once a popular attraction.
跳蚤马戏团曾经是一项受欢迎的表演。
令人难堪的斥责；碰钉子
He went to the meeting expecting praise, but got a flea in his ear.
他去开会时满心期待得到表扬，却遭到一顿难堪的斥责。
非常健康；精神抖擞
After a week in the countryside, he looked as fit as a flea.
在乡下待了一周后，他看起来非常健康。
跳蚤市场；旧货市场
We bought this lamp at a flea market for just ten dollars.
我们花十美元就在跳蚤市场买到了这盏灯。
与狗同眠的人，起来时身上必有跳蚤。
This proverb about rising up with fleas, popularized by Benjamin Franklin, warns that keeping bad company brings bad consequences.
这句关于起身时带跳蚤的谚语，由本杰明·富兰克林传播，告诫人们与坏人交往会带来不良后果。
只看这只跳蚤，且看在这其中，你拒绝我的事是多么渺小。
This is the opening line of John Donne's famous poem 'The Flea', in which the speaker uses the flea as a witty argument for seduction.
这是约翰·邓恩名诗《跳蚤》的开篇句，诗中说话者以跳蚤作为巧辩求爱的论据。
发长 /iː/ 音 (如 sea, tea)
Same pattern, same sound
Use flea naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
flea 音同 flee（逃跑），跳蚤受惊就跳走：flea 会 flee，靠跳不靠飞。
语域：neutral 常见场景：日常交谈、科普文章、宠物护理 flea 是常见的中性词，通常在日常交谈、科普文章和宠物护理等场景中都适用，口语和书面语中均无特殊限制。
flea、flee、sea、tea、tree、see 都以相同的 /i/ 音结尾，构成押韵；其中 flea 和 flee 同音，sea 和 see 同音。注意：fled 虽然拼写相近，但发音为 /flɛd/，并不押韵。
Dictionary facts from ECDICT, WIKTIONARY.
Watch the sound change