a switch for sth
表示“用于某物或某设备的开关”，用介词 for 引出开关控制的对象。
Where is the switch for the kitchen light?
厨房灯的开关在哪里？
转变；更换；调换；交换机；网络交换机；命令行选项；命令开关；switch语句；分支语句；电话交换机；交换台
A device used to turn electric current on or off, or to control the flow of current in a circuit.
指电灯、电器等的通断装置
用于开启和关闭电流或引导电流流动的装置
A device to turn electric current on and off or direct its flow.
开关
control consisting of a mechanical or electrical or electronic device for making or breaking or changing the connections in a circuit
改变或交换
A change or exchange.
替换
an event in which one thing is substituted for another
长而细的木质植物茎或用作鞭子的柔韧细杆,用于在美国实施体罚
A long, slender woody plant stem or a flexible, thin rod used as a whip to administer corporal punishment in the United States.
假发束
hairpiece consisting of a tress of false hair; used by women to give shape to a coiffure
rute的同义词
Synonym of rute.
允许指定可选行为的命令行符号
A command line notation allowing specification of optional behavior.
根据表达式的值采取不同操作的编程结构
A programming construct that takes different actions depending on the value of an expression.
连接多条线路的网络设备,允许同时通信；与效率较低的集线器相比,集线器仅将网络数据包复制到每条线路
A networking device connecting multiple wires, allowing them to communicate simultaneously, when possible. Compare to the less efficient hub device that solely duplicates network packets to each wire.
一种专用继电器、计算机硬件或其他设备系统,允许呼叫方的电话线与任何被叫方的线路连接
A system of specialized relays, computer hardware, or other equipment which allows the interconnection of a calling party's telephone line with any called party's line.
激活或关闭基因的DNA机制
A mechanism within DNA that activates or deactivates a gene.
疯狂八张的变体,其中一张牌(如A)反转游戏方向
A variant of crazy eights where one card, such as an ace, reverses the direction of play.
将球(或等同物)从比赛区域的一侧移到另一侧的战术
A play in which the ball (or equivalent) is moved from one side of the playing area to the other.
当前前台人格的转换过程；此过程的一个实例
The process of the currently fronting headmate changing; an instance of this.
Could you flip the switch by the door? The basement is dark.
你能按一下门边的开关吗？地下室很黑。
用法提示：switch 作名词，指控制电路通断的开关装置。
The main power switch is located behind the machine.
主电源开关位于机器后面。
用法提示：switch 作名词，指控制电源的设备。
I bought a new switch for the lamp because the old one stopped working.
我给台灯买了一个新开关，因为旧的坏了。
用法提示：switch 作名词，指电灯上的开关。
表示“用于某物或某设备的开关”，用介词 for 引出开关控制的对象。
Where is the switch for the kitchen light?
厨房灯的开关在哪里？
表示从一种事物向另一种事物的转变，from 和 to 后接名词或动名词，常用 the 修饰。
The switch from coal to gas cut air pollution.
从煤到天然气的转变减少了空气污染。
make the switch to 表示“转而采用某事物”，比 change 更强调转换这一动作本身。
Many drivers are making the switch to electric cars.
许多司机正在转而使用电动汽车。
特指拨动式开关，与按压式或旋转式不同。
指按压式开关，常用于电子设备。
指通过杠杆操作的开关，如老式电灯开关。
含义更广，可指各种开关或调节装置。
特指旋转式开关，如音量旋钮。
grammar · medium
易错句子There are two switchs on the wall.
正确表达There are two switches on the wall.
switch 以 -ch 结尾，复数要加 -es，变成 switches，不能只加 -s。汉语名词复数形式不变，学习者容易直接套用 -s。
grammar · medium
易错句子Please turn off switch before you leave.
正确表达Please turn off the switch before you leave.
switch 是可数名词单数，前面必须有冠词等限定词；这里特指那个开关，要用定冠词 the。汉语没有冠词，学习者常把它漏掉。
grammar · medium
易错句子Where is the switch of the light?
正确表达Where is the light switch?
英语里表示“某物的开关”习惯用名词作定语（light switch），而不是用 of 所有格；of 所有格多用于人或动物。汉语“灯的开关”用“的”，直译成 of 就不地道。
与表示'开关、转换'的名词意义相对，指持续不变的状态
与表示'改变、交换'的名词意义相对，指稳定不变
与表示'替换'的名词意义相对，指没有变化
电灯开关
He flicked the light switch and the room lit up.
他拨动电灯开关，房间亮了起来。
电源开关
Please turn off the power switch before leaving.
离开前请关闭电源开关。
开/关
The on/off switch is located on the side of the device.
开/关位于设备侧面。
开关面板
The electrician replaced the old switch panel.
电工更换了旧的开关面板。
开关盒
The switch box is inside the closet.
开关盒在壁橱里。
常与开关一起在电器上出现
开关是电路中的控制元件
开关常用于控制灯的亮灭
开关控制电源的通断
一种类型的开关，用于在两个状态间切换
突然改变（尤指情绪或行为）
He can flip a switch from being friendly to being cold.
他能突然从友善变得冷漠。
好像开关被打开了一样（形容突然变化）
As if a switch had been flipped, the crowd went silent.
好像开关被打开了一样，人群突然安静下来。
触发开关（常比喻启动某事）
We need to hit the switch on this project soon.
我们需要尽快启动这个项目。
随心切换，随时畅玩！
The Nintendo Switch console encourages you to switch and play anywhere.
任天堂Switch游戏机鼓励你随心切换，随时畅玩。
切换，切换，切换（我亲自上阵）
In Iggy Azalea's song 'Switch', she repeats 'switch' to emphasize changing things up.
伊基·阿塞莉娅的歌曲《Switch》中重复'切换'来强调改变。
Choose the next layer that will help you use Switch with more confidence.
Recommended next
Preparing Confusing words
Complete this area with confusing words.
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.
开关位置
Make sure the switch position is set to 'on'.
确保开关位置设置为“开”。