1[transitiveT]SEPARATE to remove unwanted substances from water, air etc by passing it through a special substance or piece of equipment 过滤
The water in the tank is constantly filtered.
鱼缸里的水在不停地被过滤。
The ozone layer filters harmful UV rays from the sun.
臭氧层过滤掉有害的太阳紫外线。
2[intransitiveI always + adverbadv/prepositionprep]MOVE something OR somebody if people filter somewhere, they move gradually to that place 〔人群〕逐渐移动,逐渐走过
Chattering noisily, the crowd began to filter into the auditorium.
人群叽叽喳喳地说着话,慢慢步入会堂。
3[intransitiveI always + adverbadv/prepositionprep]FIND OUT if news, information etc filters somewhere, people gradually hear about it from each other 〔消息、信息等〕慢慢传开,走漏,泄漏
The news gradually filtered through from Bombay last night.
昨晚消息渐渐从孟买传开了。
4[intransitiveI always + adverbadv/prepositionprep]C if light or sound filters into a place, it can be seen or heard only slightly 〔光线或声音〕隐约地透过,隐约地传入
Moonlight filtered in through the frosted window.
月光透过磨砂玻璃窗隐约照射进来。
The familiar notes of Beethoven’s ‘Für Elise’ filtered from the bar.
贝多芬《致爱丽丝》那熟悉的旋律从酒吧传来。
5.[intransitiveI, transitiveT]British EnglishBrETTC if traffic filters, or if a system filters it, cars can turn left or right while other vehicles going straight ahead must wait (使)〔车辆〕分流转弯〔直行的车辆必须等待〕
6filter something ↔ outphrasal verbphr v
a)SEPARATEto remove something, using a filter 〔用过滤器〕滤除,滤掉
The pump filters out mud.
这台泵滤掉泥浆。
b)to remove words, information etc that you do not need or want 滤除〔不需要的单词、信息等〕
Net users can filter out unwanted emails with software.