n. device that removes something from whatever passes through it
n. an electrical device that alters the frequency spectrum of signals passing through it
v. remove by passing through a filter
n. 滤波器, 过滤器, 滤光器, 过滤嘴, 去尘器
vt. 过滤, 渗透, 走漏
vi. 滤过, 渗入
[计] 过滤器, 筛选
1. I need to filter the water before drinking it.
我需要过滤水才可以喝。
2. She used a coffee filter to make her morning brew.
她用咖啡过滤器准备早上的咖啡。
3. The teacher asked us to filter out the important information from the text.
老师让我们从文本中筛选出重要信息。