| 单词 | filter |
| 释义 | filter 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）. |
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