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| NOUN |
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| /ˈfɪltə/ |
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| 1 | an object or piece of equipment that allows you to remove substances that are not wanted from a liquid or gas 过滤器 |
| a water filter 滤水器 |
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| 2 | a glass or plastic object that you put on a camera to change the colour or amount of light that passes through the lens （照相机的）滤色镜，滤光器 |
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| 3 | a computer program that prevents some types of information from appearing on your computer when you search the Internet 过滤程序 |
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| 4 | a filter tip |
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| 5 | BRITISH a traffic light that gives a separate signal to traffic turning in a particular direction （指示车辆转弯的）分流指示灯 |
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