1
a filter for [noun]
表示过滤的对象或用途。
I bought a filter for my tap.
我买了一个水龙头过滤器。
过滤器；滤器
先理解核心含义，再看它在真实句子里的用法。
过滤器；滤器
a device that removes unwanted substances from a liquid, gas, or other substance passing through it
I bought a filter for my tap.
我买了一个水龙头过滤器。
过滤器
A device which separates a suspended, dissolved, or particulate matter from a fluid, solution, or other substance; any device that separates one substance from another.
去除通过其中的物质的装置
device that removes something from whatever passes through it
滤波器
Electronics or software that separates unwanted signals (for example noise) from wanted signals or that attenuates selected frequencies.
改变通过其中信号频谱的电气装置
an electrical device that alters the frequency spectrum of signals passing through it
The water filter in the kitchen needs to be replaced every three months.
厨房里的净水器每三个月需要更换一次。
He installed a new oil filter in his car to keep the engine clean.
他在车上安装了一个新的机油滤清器以保持发动机清洁。
The camera's filter reduces glare and enhances colors in bright sunlight.
相机的滤镜可以减少强光并在明亮阳光下增强色彩。
表示过滤的对象或用途。
I bought a filter for my tap.
我买了一个水龙头过滤器。
说明过滤器的功能。
This filter removes dust from the air.
这个过滤器能去除空气中的灰尘。
复合名词，表示特定类型的过滤器。
You need to change the oil filter regularly.
你需要定期更换机油滤清器。
Not this
I need filter to clean water.
Use this
I need a filter to clean water.
可数名词filter前需要不定冠词a/an或定冠词the。中文学习者常忽略冠词，因为汉语没有冠词。
Not this
This is a filter of water.
Use this
This is a filter for water.
表示用途时，介词应用for而非of。'filter of water'可能被理解为'水的一部分'或'来自水的过滤器'，不符合英语习惯。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
咖啡滤纸
I need to buy some coffee filters for the coffee maker.
我需要给咖啡机买一些咖啡滤纸。
空气过滤器
You should change the air filter in your car every year.
你应该每年更换汽车里的空气过滤器。
机油滤清器
The mechanic replaced the oil filter during the service.
机械师在保养时更换了机油滤清器。
净水器
We use a water filter to remove impurities from tap water.
我们使用净水器去除自来水中的杂质。
滤纸
The lab uses filter paper to separate solids from liquids.
实验室用滤纸分离固体和液体。
滤波电路
A filter circuit can remove unwanted frequencies from a signal.
滤波电路可以去除信号中不需要的频率。
过滤气泡
Social media algorithms create filter bubbles that reinforce our beliefs.
社交媒体算法制造了过滤气泡，强化了我们的信念。
Use filter naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
想象一个筛子（filter）把沙子过滤掉，留下纯净的水。
作为名词，'filter' 通常指过滤器，多用于日常（如咖啡滤纸）或技术（如电子滤波器）场景，中性偏专业。
可数名词
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.