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VERB
過濾
To filter a substance means to pass it through a device which is designed to remove certain particles contained in it.
例句
The best prevention for cholera is to boil or filter water, and eat only well-cooked food.
預防霍亂的最佳方法是將水煮沸或過濾，并且只食用煮熟后的食物。
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N-COUNT
濾器;過濾器
A filter is a device through which a substance is passed when it is being filtered.
例句
...a paper coffee filter.
咖啡過濾紙
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N-COUNT
濾聲器;濾光器;濾波器
A filter is a device through which sound or light is passed and which blocks or reduces particular sound or light frequencies.
例句
You might use a yellow filter to improve the clarity of a hazy horizon.
可以使用黃色濾光器讓模糊的視野更加清晰。
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VERB
(光或聲)隱約透過，緩緩傳至
If light or sound filters into a place, it comes in weakly or slowly, either through a partly covered opening, or from a long distance away.
例句
Light filtered into my kitchen through the soft, green shade of the cherry tree.
光線透過櫻桃樹柔和的綠陰隱約照進我的廚房。
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VERB
(消息等)走漏，慢慢傳開
When news or information filters through to people, it gradually reaches them.
例句
It took months before the findings began to filter through to the politicians...
調查結果數月后才傳到從政者的耳朵里。
News of the attack quickly filtered through the college.
有關襲擊的消息很快就在該學院中傳開了。
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N-COUNT
(路口的)轉彎信號燈(或車道)
A traffic filter is a traffic signal or lane which controls the movement of traffic wanting to turn left or right.
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PHRASAL VERB
濾除;濾掉
To filter out something from a substance or from light means to remove it by passing the substance or light through something acting as a filter.
例句
Children should have glasses which filter out UV rays...
兒童應該戴上濾除紫外線的眼鏡。
Plants and trees filter carbon dioxide out of the air and produce oxygen.
花草樹木會過濾掉空氣中的二氧化碳并制造氧氣。