过滤
Filter \Fil"ter\, v. t. [imp. & p. p. {Filtered}; p. pr. & vb. n. {Filtering}] [Cf. F. filter. See {Filter}, n., and cf. {Filtrate}.] To purify or defecate, as water or other liquid, by causing it to pass through a filter. {Filtering paper}, or {Filter paper}, a porous unsized paper, for filtering.