figure out

搞清楚，想清楚

fifteenth, fifth, fifthly, fiftieth, fifty, fifty pence (also fifty p, 50p), fifty-fifty, fig, fig-leaf, fight, fighter, fighting, figment, figurative, figuratively, figure, figure for, figure of eight (US also figure eight), figure of speech, figure on, figure up, figure-head, figurehead, figurine, filament, filch, file, filet, filial, filibuster, filigree, filing, filing clerk (US file clerk), filings, Filipino, fill, fill in, fill in /out, fill out, fill up,