flash card

card on which a word or words are printed or written, used as a visual aid to learning 教学卡片（有单词或词语的直观教具）.

flame out, flame-thrower, flamenco, flaming, flamingo, flammability, flammable, flan, flange, flank, flannel, flannelette, flap, flapjack, flapper, flare, flare up, flare-path, flare-up, flash, flash cube, flash out, flash-flood, flash-gun, flash-locks, flash-point, flashback, flashbulb, flasher, flashily, flashlight, flashy, flask, flat, flat racing, flat spin, flat-bottomed, flat-fish, flat-footed, flat-iron,