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a selector for [sth]
This is a selector for different modes.
这是一个用于不同模式的选择器。
选择器；选择者
先理解核心含义，再看它在真实句子里的用法。
选择器；选择者
a switch used to select among alternatives
This is a selector for different modes.
这是一个用于不同模式的选择器。
选择或挑选的人或物
Someone or something which selects or chooses.
负责选择球员参赛的管理员
An administrator responsible for selecting which players will play for a side.
样式表中的匹配表达式,决定标记中哪些元素受样式影响
A matching expression in a stylesheet determining which elements in the markup are affected by a style.
指向描述内存段结构的指针
A pointer to a structure describing a segment of memory.
The remote control has a selector for changing the input source.
遥控器上有一个选择器，用于切换输入源。
As a selector, she is responsible for choosing the best candidates.
作为选择者，她负责挑选最佳候选人。
The CSS selector targets specific elements on a web page.
CSS选择器用于定位网页上的特定元素。
This is a selector for different modes.
这是一个用于不同模式的选择器。
The color selector of the app is intuitive.
该应用的颜色选择器很直观。
A selector that filters results by date.
一个按日期过滤结果的选择器。
Not this
I selector the option.
Use this
I select the option.
错误地将名词 'selector' 用作动词。'select' 才是动词，意为'选择'。
Not this
Make a selector from the list.
Use this
Make a selection from the list.
混淆了 'selector'（选择者/选择器）和 'selection'（选择的行为或结果）。此处意图表达'做出选择'，应用 'selection'。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
文件选择器
Use the file selector to choose the document you want to upload.
使用文件选择器选择你要上传的文档。
类型选择器
The type selector allows you to filter results by category.
类型选择器允许你按类别筛选结果。
日期选择器
Click on the date selector to pick a specific date.
点击日期选择器以选择特定日期。
选择开关
The selector switch on the control panel lets you choose the operating mode.
控制面板上的选择开关让你选择操作模式。
语言选择器
The website has a language selector in the top right corner.
该网站右上角有一个语言选择器。
颜色选择器
Use the color selector to pick the background color.
使用颜色选择器选择背景颜色。
Use selector naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
selector = select（选择）+ or（…者/器），即做选择的人或工具。
语域：mixed 常见场景：computing、electronics、general 该词在计算机和电子领域多作为技术术语使用，较为正式；在日常语境中表示‘选择者’时使用频率较低，因此整体注册为混合（x）。
These words share the '-ector' spelling ending. However, 'selector' is pronounced with /i/ in the stressed syllable, while most others use /ɛ/ (collector, elector, reflector, defector, sector, director). Only 'elector' may be a close rhyme in some accents where both are /ɪ/. Use the IPA transcriptions carefully.
Dictionary facts from ECDICT, WIKTIONARY.