1
- a porous device for removing impurities or solid particles from a liquid or gas passed through it（过）滤器：
an oil filter.
滤油器。
1.1
- short for FILTER TIP.FILTER TIP的简称：
as modifier a cheap filter cigarette.廉价的过滤嘴香烟。
1.2
- a screen, plate, or layer of a substance which absorbs light or other radiation or selectively absorbs some of its components滤光器（或片）; 射线过滤板：
filters can be used in photography to reduce haze.
滤光器在摄影中可用来减少雾霾。
1.3
- a device for suppressing electrical or sound waves of frequencies not required滤波器。
1.4
- Brit an arrangement whereby vehicles may turn left (also right) while other traffic waiting to go straight ahead or turn right (also left) is stopped by a red light〈英〉（车辆的）分流：
as modifier a filter lane.分流车道。
1.5
- a traffic light signalling such an arrangement, typically one partly blacked out to form an arrow（尤指箭头状的车辆）分流灯。
1.6
- Computing a piece of software that processes text, for example to remove unwanted spaces or to format it for use in another application【计算机】筛选程序。
with obj.(常作be filtered)
1- pass (a liquid, gas, light, or sound) through a device to remove unwanted material过滤（液体, 气体, 光, 声音）：
the eye filters out ultraviolet radiation
眼睛能将紫外线滤去
figurative 〈喻〉you'll be put through to a secretary whose job it is to filter calls.
你的电话将被接到一个负责筛选来电的秘书那儿。
1.1
- Computing process or treat with a filter【计算机】过滤。
1.2
- no obj., with adverbial of direction move slowly or in small quantities or numbers through something or in a specified direction缓慢（或少量）地通过（或行进）：
people filtered out of the concert during the last set.
终曲声中, 人们缓缓走出了音乐厅。
1.3
- (of light or sound) enter a place slowly or in small quantities（光, 声）透入：
sunlight filtered in through the thin curtains.
阳光透过薄薄的窗帘射了进来。
1.4
- no obj., with adverbial(of information) gradually become known（消息）走漏, 渐渐传开：
the news began to filter in from the hospital.
消息开始慢慢从医院里传入。
1.5
- no obj., with adverbial of direction Brit (of traffic) be allowed to pass to the left or right at a junction while traffic going straight ahead is halted〈英〉（车辆在直行车辆遇红灯受阻时）被允许在路口向左（或向右）转弯行驶。
词源
late Middle English (denoting a piece of felt)： from French filtre, from medieval Latin filtrum 'felt used as a filter', of West Germanic origin and related to FELT1 .