filter

• 一种装置或物质，用于去除液体、气体或信号中的不需要的颗粒、杂质或特定频率。也指过滤程序或软件功能，用于筛选、排除或处理信息。

A device or substance that removes unwanted particles, impurities, or certain frequencies from a liquid, gas, or signal.

1. Device for removing impuritiesB1formal

   A device or material that removes unwanted substances from a liquid or gas passing through it.

   过滤器

   • The water filter removes chlorine and sediment.
   • You need to replace the air filter in the car every year.
   • The coffee filter separates the grounds from the liquid.

   同义词purifierscreensievestrainer

2. Photography or digital effectA2informal

   A software feature or physical lens that alters the appearance of an image.

   滤镜

   • She applied a vintage filter to her photo.
   • Instagram has many fun filters for selfies.
   • The photographer used a polarizing filter to reduce glare.

   同义词adjustmenteffectoverlaypreset

3. Data or information filterB2formalIT

   A rule or process that selects or excludes certain data based on criteria.

   过滤器

   • The email filter automatically moves spam to a separate folder.
   • You can set a filter to show only unread messages.
   • The search filter helps narrow down results by date.

   同义词gatequalifierscreenselectorsieve

• 动词，表示让某物通过装置或过程以去除不需要的成分，也指根据标准进行筛选或排除。

A verb used to indicate the act of passing something through a device or process to remove unwanted elements, or to select or exclude based on criteria.

1. Remove impuritiesB1formal

   To pass a substance through a device to remove unwanted particles or impurities.

   过滤

   • We need to filter the water before drinking it.
   • The machine filters the oil to remove contaminants.
   • She filtered the coffee grounds from the liquid.

   同义词clarifypercolatepurifyrefinescreensievesiftstrain

2. Select or process informationB1formal

   To examine or process information, data, or items to select or remove specific ones.

   筛选

   • The software filters out spam emails automatically.
   • You can filter the search results by date or relevance.
   • The committee filtered the applications to find the best candidates.

   同义词cullextractscreenselectseparatesiftsortwinnow

3. Gradually become knownB2informal

   To move or spread gradually through a barrier or medium.

   渗漏

   • News of the merger filtered through the company slowly.
   • Light filtered through the curtains into the room.
   • The details of the plan filtered out to the press.

   同义词emergeleakoozepenetratepercolateseepspreadtrickle

短语动词变体filter out