twofold

a.双重的

twitchy, twitter, twittery, two, two bits, two pence (also ,two `p, 2p), two-, two-a-penny, two-bit, two-dimensional, two-edged, two-faced, two-handed, two-piece, two-ply, two-seater, two-time, two-timer, two-tone, two-way, twopence, twopenny, twopenny-halfpenny, twosome, tycoon, tying, tyke (also tike), tympanum, type, type-cast, type-face (also face), typescript, typesetter, typewrite, typewriter, typewritten, typhoid, typhoon, typhus, typical,