over·night /ˌovɚ/
 前晚(a.)通宵的,晚上的,前夜的(ad.)在前一夜,整夜,昨晚一晚上


 O·ver·night n. The fore part of the night last past; the previous evening. [R.]

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 o·ver·night, adv.
 1. In the fore part of the night last past; in the evening before.
 2. Throughout the night; as, the candle will not last overnight.
    I had been telling her all that happened overnight.   --Dickens.

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 overnight
      adj : lasting through or extending over the whole night; "a
            nightlong vigil"; "an overnight trip" [syn: nightlong]
      adv : happening in a short time or with great speed; "these
            solutions cannot be found overnight!"