首页filterfilter的意思

filter

英 ['fɪltə] 美['fɪltɚ]

CET4TEM4IELTSGRE考研TOEFLCET6中低频词核心词汇

复数: filters;第三人称单数: filters;过去式: filtered;过去分词: filtered;现在分词: filtering;

filter 过滤器

来自felt, 毛毡。用于过滤污物。

filter: filter: [14] Ultimately, filter is the same word as felt – and indeed that is what it first meant in English (‘They dwell all in tents made of black filter’, John Mandeville, Travels 1400). It comes via Old French filtre from medieval Latin filtrum, which was borrowed from prehistoric West Germanic *filtiz, source of English felt. The modern sense of filter did not develop until the 17th century; it came from the use of felt for removing impurities from liquid. The derivative infiltrate dates from the 18th century. (The homophonic philtre [16] is not related; it comes ultimately from Greek phílos ‘beloved’.)
=> felt, infiltrate
filter (n.): early 15c., "piece of felt through which liquid is strained," from Old French feutre "felt, felt hat, carpet" (Modern French filtre) and directly from Medieval Latin filtrum "felt" (used to strain impurities from liquid), from West Germanic *filtiz (see felt (n.)). Figurative use from c. 1600. As a pad of absorbent material attached to a cigarette, from 1908.
filter (v.): 1570s (transitive), from French filtrer or from Medieval Latin filtrare, from filtrum "felt" (see filter (n.)). The figurative sense is from 1830. Intransitive use from 1798. Related: Filtered; filtering.

2. She gathered loose soil and let it filter slowly through her fingers.: 她捧起疏松的泥土，任其缓缓地从指间漏下。

3. Change the filter cartridge as often as instructed by the manufacturer.: 按照生产厂家的使用说明，经常更换过滤筒。