1
the latch on [sth]
latch 常与 on 连用，说明门闩所在的物体。
The latch on the front door is broken.
前门上的门闩坏了。
门闩；插销
先理解核心含义，再看它在真实句子里的用法。
门闩；插销
a fastening for a door or gate, typically a bar or catch that fits into a slot or groove and can be lifted or slid open
The latch on the front door is broken.
前门上的门闩坏了。
门闩,一种门的紧固装置,有一根横杆嵌入凹槽,可通过任一侧的杠杆或绳子提起。
A fastening for a door that has a bar that fits into a notch or slot, and is lifted by a lever or string from either side.
只能用钥匙从外面打开的弹簧门锁
spring-loaded doorlock that can only be opened from the outside with a key
一种电子电路,类似于触发器,但它是电平触发而非边沿触发。
An electronic circuit that is like a flip-flop, except that it is level triggered instead of edge triggered.
用于闩门或栅门的插销；可滑入凹槽的闩条
catch for fastening a door or gate; a bar that can be lowered or slid into a groove
She turned the handle and the latch clicked open.
她转动把手，门闩咔哒一声打开了。
The gate latch was rusty and wouldn't close properly.
大门的闩锁生锈了，无法正常关闭。
He installed a new latch on the garden shed.
他在花园小屋上安装了一个新门闩。
latch 常与 on 连用，说明门闩所在的物体。
The latch on the front door is broken.
前门上的门闩坏了。
lift 表示向上提起门闩，这是最常见的动词搭配。
She lifted the latch and entered the cottage.
她抬起门闩，走进了小屋。
secure 在此指“闩牢的、牢固的”，不是“安全的”。
Make sure the latch is secure before going to bed.
睡觉前确保门闩闩好。
Not this
He fixed latch on the door.
Use this
He fixed the latch on the door.
中文没有冠词，因此学习者常漏掉单数可数名词前的限定词。latch 是可数名词，此处需要加上定冠词 the。
Not this
The two latchs on the gate are rusty.
Use this
The two latches on the gate are rusty.
以 -ch 结尾的名词变复数时加 -es，而不是只加 -s。latch 的复数是 latches。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
门闩，门锁
She lifted the door latch and stepped inside.
她抬起门闩，走了进去。
门虚掩着（门闩扣着但未锁）
Leave the door on the latch so I can come in later.
把门虚掩着，这样我待会儿能进来。
安全插销，保险闩
The safety latch on the gate stopped the children from opening it.
大门上的安全插销让孩子们无法打开。
门锁钥匙（尤指大门弹簧锁的钥匙）
He always carried a latch key in his pocket.
他口袋里总是带着一把门锁钥匙。
松开插销；打开门闩
You have to release the latch before you can open the window.
你必须先松开插销才能打开窗户。
良好的衔乳（婴儿含乳姿势）
A good latch is important for pain-free breastfeeding.
良好的衔乳对无痛母乳喂养很重要。
（门）虚掩着，关着但没上锁
Leave the back door on the latch so I can get in.
把后门虚掩着，这样我就能进来。
明白，理解；缠住不放
It took me a while to latch onto what she was saying.
我过了一会儿才明白她在说什么。
你黏着我，我黏着你。（出自英国电子乐队 Disclosure 与 Sam Smith 的歌曲《Latch》）
She lifted the latch and opened the gate.
她拉开门闩，打开了大门。
Use latch naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
想想门闩的样子：把横杆拉（la）起来，再插进凹槽，咔嗒一声——latch 就是门闩。
语域：neutral 常见场景：家居门窗、建筑五金、使用说明 作名词指“门闩、插销”时，语气通常为中性，多用于居家、建筑或五金场景，日常口语和书面说明中都较常见。
表示门闩，是可数名词。
Dictionary facts from ECDICT, WIKTIONARY.