filter
/ˈfɪltə(r); `fɪltɚ/ n
1 device containing paper, sand, cloth, etc used to hold back any solid material or impurities in a liquid or gas passed through it 过滤器: an oil filter 滤油器
a coffee filter 咖啡过滤器. =>illus 见插图.
2 screen (esp of coloured glass) that allows light only of certain wavelengths to pass through 滤光镜; 滤色镜
I took this picture with a red filter. 这张照片我是用红色滤光镜拍摄的.
3 device for suppressing certain electrical or sound waves （电波、 声波的）滤波器.
4 (Brit) device that signals to show that traffic may turn left while other traffic waiting to go straight ahead or turn right is still stopped by a red traffic light （在红灯指示其他车辆不得直行或右转时）指示车辆左转的交通设施. =>illus 见插图. filter, v
1 [Tn]
(a) pass (liquid, light, etc) through a filter 过滤（液体、 光等）
It won't take long to filter the coffee. 用不了多少时间就可以把咖啡过滤好.
(b) purify (a liquid) by using a filter 滤清（液体）
All drinking water must be filtered. 饮用水均须过滤净化.
2 [I, Ipr, Ip]
~ in, out, through, etc (fig 比喻) pass or flow slowly in a specified direction; become known gradually 慢慢传开; 渗透
New ideas are slowly filtering into people's minds. 新思想逐渐深入人心.
The news of the defeat started to filter through. 战败的消息开始传出来.
3 [I] (Brit) (of traffic) turn left while other traffic waiting to go straight ahead or turn right is stopped by a red traffic light （指车辆）左转行驶（有红灯指示其他车辆不得直行或右转）.