adj.在兩者之間
They think they'll win the election easily, but there's many a slip 'twixt cup and lip. 他們以為能在選舉中輕易取勝，但事情往往會功敗垂成。
adv.在兩者之間；不走極端
prep.在 ... 之間；在 ... 中間；由 ... 到 ...
