
latches
词源
源自古英语'læccan'(抓住),与古诺尔斯语'laka'(拉)同源,最初表示抓取或握持的动作,后引申为固定装置。
noun
❶ 指门或窗上用来固定关闭状态的金属装置,通常由可移动的钩子或插销构成,需要手动操作才能打开。
“She lifted the latch and pushed the door open.”
(她抬起门闩,推开了门。)
“The old gate had a rusty latch that creaked loudly.”
(旧大门上的门闩生锈了,发出刺耳的吱呀声。)
❶ 在电子工程中,指一种能保持其输出状态的简单存储电路,常用于数字系统中临时保存信号。
“The D latch stores the input value when the clock signal is high.”
(当时钟信号为高电平时,D锁存器会存储输入值。)
“We need to add a latch circuit to hold the processor's state.”
(我们需要添加锁存器电路来保持处理器状态。)
verb
❶ 用门闩固定某物,使其保持关闭或连接状态,通常需要施加一定力量才能打开。
“He latched the window before the storm arrived.”
(他在暴风雨来临前闩好了窗户。)
“The suitcase won't stay closed unless you latch it properly.”
(除非你正确扣上搭扣,否则行李箱关不牢。)
❶ 比喻紧紧抓住或依附某事物,常带有不愿放手或持续关注的意味。
“The child latched onto her mother's leg and refused to let go.”
(孩子紧紧抱住妈妈的腿不肯松开。)
“The media quickly latched onto the celebrity scandal.”
(媒体迅速抓住名人丑闻不放。)
常见短语
on the latch — 指门未完全锁住,仅用门闩轻轻扣住的状态,通常表示可以轻松推门进入。
“Leave the back door on the latch so the cat can come in.”
(后门留着别锁死,这样猫可以进来。)
latch onto — 指紧紧抓住某物或强烈认同某个想法,常带有执着或依附的意味。
“The young artist latched onto the mentor's every word.”
(这位年轻艺术家对导师的每句话都奉若圭臬。)