twixt

We should get to London before 7 o’clock, but there’s many a slip ’twixt cup and lip.

我们应能在7前赶到伦敦，可是事情往往很难说准。

When 'twixt their arms the moon takes shape,The dazzle of riches will leave all agape.

环绕之间，月相有所改变，炫目的财终将使你眼花缭乱。