filter

n. 筛选,滤波器,过滤器,滤色镜
v. 过滤,渗透,走漏
[计算机] 过滤

The sunlight filtered through the curtains.

阳光透过窗帘映了进来。

The teacher gave each of us a piece of filter paper before doing the experiment.

做试验前，老师给我们每个人发了一张滤纸。