two-edged

a.双刃的

twinkling, twirl, twist, twisted, twister, twisty, twit, twitch, twitchily, twitchiness, twitchy, twitter, twittery, two, two bits, two pence (also ,two `p, 2p), two-, two-a-penny, two-bit, two-dimensional, two-faced, two-handed, two-piece, two-ply, two-seater, two-time, two-timer, two-tone, two-way, twofold, twopence, twopenny, twopenny-halfpenny, twosome, tycoon, tying, tyke (also tike), tympanum, type, type-cast,