filter

n.滤纸，过滤器 vt.过滤

filings, Filipino, fill, fill in, fill in /out, fill out, fill up, fill with, filler, fillet, filling, filling station, fillip, filly, film, film show, film star, film test, film-strip, filmy, filter-paper, filter-tip, filter-tipped, filth, filthily, filthiness, filthy, filtrate, filtration, fin, finable, final, finale, finalist, finality, finalization, finalisation, finalize, finalize, finalise, finally, finance,