Phrase
filter out
滤出；过滤掉
to remove or separate something unwanted from a substance or group by passing it through a filter or using a similar process
- 1.
To selectively remove part of something.
过滤掉
- 2.
To come out gradually (e.g. news).
逐渐传出
过滤掉；逐渐传出；滤出
In use
The water filter removes most impurities, but it cannot filter out all the tiny bacteria.
You should filter out the coffee grounds before pouring the drink.
My phone screen filters out blue light to protect my eyes.
filter out sth
We need to filter out all the noise.
我们需要过滤掉所有噪音。
filter out sth from sth
The software filters out spam from your inbox.
该软件从收件箱中过滤掉垃圾邮件。
be filtered out
常用于被动语态，表示被剔除。
Any irrelevant data are filtered out.
任何无关数据都会被过滤掉。
Verb forms
base filter out · third person filters out · -ing filtering out · past filtered out · past participle filtered out
滤出
Common mistakes
We should filter spam emails.We should filter out spam emails.
中文的“过滤”可以表示剔除，但英文短语动词 filter out 必须包含 out 才能表达“去除”的含义。缺少 out 会使句子意思不完整或改变为“过滤（但可能不剔除）”。
Spam emails should be filtered before reading.Spam emails should be filtered out before reading.
在被动语态中，filter out 必须整体保留，out 是短语动词的固定部分，表示“被去除”。遗漏 out 会导致句子含义变为“被过滤”（不一定被去掉），不符合原意。
Connections
Confusing words
- sort out
- 整理出；解决 · filter out 强调通过过滤去除杂质或不需要的东西，而 sort out 更侧重分类整理或解决问题
Word family
- filters out
- third person singular
- filtered out
- past, past participle
- filtering out
- present participle
Learner notes
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.