twilight zone

(a) inner city area where the buildings are dilapidated （建筑物破旧的）内城区. (b) uncertain area or condition between others that are more clearly defined （介於界限分明的两者之间的）过渡区域, 模糊状态: Wrestling is in a twilight zone between sport and entertainment. 摔交是介於运动和娱乐两者之间的活动.

tweedy, tweet, tweeter, tweezers, twelfth, twelve, twelve-, twelvemonth, twentieth, twenty, twenty pence (also ,twenty `p, 20p), twenty-, twenty-one, twerp, twice, twiddle, twiddly, twig, twiggy, twilight, twilit, twill, twin, twin bed, twin set, twin town, twin-engined, twine, twinge, twinkle, twinkling, twirl, twist, twisted, twister, twisty, twit, twitch, twitchily, twitchiness,