1
a/the zipper on [something]
表示拉链位于哪个物品上时，介词用 on。
The zipper on my backpack is broken.
我背包上的拉链坏了。
拉链
先理解核心含义，再看它在真实句子里的用法。
拉链
A fastener with two toothed edges that are locked together by a sliding tab.
The zipper on my backpack is broken.
我背包上的拉链坏了。
压敏塑料封口,如Ziploc袋上的。
A pressure-sensitive plastic closure, as on a Ziploc bag.
拉链,通过滑动拉头合拢两排齿边的紧固件
a fastener for locking together two toothed edges by means of a sliding tab
亮氨酸拉链。
A leucine zipper.
一连串夹在身上的衣夹或夹子,然后迅速拉下。
A string of clothes pegs or clips attached to the body and then quickly pulled off.
My jacket's zipper is stuck, so I can't close it properly.
我夹克的拉链卡住了，所以我没法好好拉上。
She pulled the zipper on her backpack closed before getting on the train.
她在上火车前把背包的拉链拉上了。
A small piece of fabric got caught in the zipper of my dress.
一小块布料卡在我连衣裙的拉链里了。
表示拉链位于哪个物品上时，介词用 on。
The zipper on my backpack is broken.
我背包上的拉链坏了。
“拉开”可用 open，“拉上”可用 close 或 do up。
Please close the zipper before washing the coat.
洗这件外套前请把拉链拉上。
描述拉链出问题时，常用 stuck、broken 或 jammed。
The zipper is stuck and won't move.
拉链卡住了，拉不动。
Not this
I bought new zipper for my bag.
Use this
I bought a new zipper for my bag.
zipper 是可数名词，单数形式不能单独使用，前面需要加冠词 a；加上 a 后句子符合英语可数名词的用法。
Not this
My zipper can't open.
Use this
I can't open my zipper.
英语里表示“拉开拉链”时，通常由人作主语来执行 open 这个动作，拉链本身不能自己打开；改用 I 作主语后句意自然。
Not this
There is a zipper in my jacket.
Use this
There is a zipper on my jacket.
拉链是附在夹克表面上的，表示“在夹克上”应用介词 on，而不是 in；改后介词用法正确。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
拉链拉头
The zipper pull on my backpack broke.
我背包上的拉链拉头断了。
拉链齿
A few of the zipper teeth are bent, so the zipper won't close smoothly.
有几颗拉链齿弯了，所以拉链拉不顺畅。
拉链隔层
I keep my keys in the zipper compartment of my handbag.
我把钥匙放在手袋的拉链隔层里。
把拉链卡住
He got the zipper stuck on his winter coat.
他把冬装外套的拉链卡住了。
拉上拉链
Please close the zipper on your backpack before you run.
跑步前请把你背包的拉链拉上。
拉链袋；密封袋
She uses a zipper bag to store her cables.
她用拉链袋收纳数据线。
Use zipper naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
拉上拉链时会发出清脆的“zip”声，想象夹克“唰”地一下拉好，记住zipper以zip开头，zip就是拉。
语域：neutral 常见场景：服装、箱包、日常用品 拉链指衣物、包袋上通过拉头开合的紧固件，在日常对话和一般书面语中都是中性常用词。通常用于普通物品描述，不涉及生僻义项；正式程度随语境变化，但整体以中性为主。
这 6 个词都与 zipper 押韵：它们的重读元音 /ɪ/ 和后面的 /pɝ/ 相同，拼写都以 -ipper 结尾。注意别被形近词误导：zephyr 和 zither 看起来有点像，但分别读作 /ˈzɛfɚ/ 和 /ˈzɪðɚ/，与 zipper 并不押韵。
Dictionary facts from ECDICT, WIKTIONARY.