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input (U)
不可数，泛指输入物或投入的资源。
The project needs more input from experts.
这个项目需要更多来自专家的输入。
输入；输入数据
先理解核心含义，再看它在真实句子里的用法。
输入；输入数据
Data or information fed into a machine, computer, or process, which affects its output.
The project needs more input from experts.
这个项目需要更多来自专家的输入。
放入或注入的行为或过程
The act or process of putting in; infusion.
放入的东西,如数量
That which is put in, as in an amount.
工作或信息上的贡献,如意见或建议
Contribution of work or information, as an opinion or advice.
输入到过程中以影响其输出的数据
Data fed into a process with the intention of it shaping or affecting the output of that process.
The main input for the factory is raw cotton.
工厂的主要投入是原棉。
Connect the audio input to the amplifier.
将音频输入连接到放大器。
We value your input during the meeting.
我们重视您在会议中的意见。
不可数，泛指输入物或投入的资源。
The project needs more input from experts.
这个项目需要更多来自专家的输入。
可数，指具体的输入项或投入物。
We are analyzing the various inputs to the model.
我们正在分析模型的各种输入。
表示输入的对象或方向。
What is the input to the system?
系统的输入是什么？
Not this
We need an input from all members.
Use this
We need input from all members.
input 作“意见、信息”讲时是不可数名词，前面不用不定冠词 ‘an’。
Not this
Please input on the proposal.
Use this
Please give your input on the proposal.
input 作名词时需要搭配动词（如 give），直接用作动词时需接宾语。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
用户输入
The software requires user input to proceed.
软件需要用户输入才能继续。
数据输入
Data input must be verified for accuracy.
数据输入必须验证准确性。
输入设备
A keyboard is a common input device.
键盘是一种常见的输入设备。
输入信号
The input signal is weak.
输入信号很弱。
提供输入
Please provide input on the proposal.
请对提案提供输入。
输入字段
Fill in your name in the input field.
在输入字段中填写您的名字。
Use input naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
in + put = 放入，联想'输入'就是把东西放进去。
register: neutral; contexts: 计算机操作, 日常交流; note: 通常用于描述将数据、信息或资源输入系统，既可用于技术文档也可用于一般谈话。
Words that rhyme with the '-put' in 'input': put, foot, soot (all /ʊt/). Note that 'output' shares the same spelling chunk 'put' as input but is pronounced /ˈaʊt.pʊt/. Other words ending in '-put' like 'dispute' have different vowel sounds. Words like 'cut' are spelled similarly but pronounced with /ʌt/.
Dictionary facts from ECDICT, WIKTIONARY, WORDNET.