be·tween /bɪˈtwin/
 (ad.)在之間,從…到…,介于…
 between
 故障間平均時間
 between
 間隔
 Be·tween prep.
 1. In the space which separates; betwixt; as, New York is between Boston and Philadelphia.
 2. Used in expressing motion from one body or place to another; from one to another of two.
    If things should go so between them.   --Bacon.
 3. Belonging in common to two; shared by both.
    Castor and Pollux with only one soul between them.   --Locke.
 4. Belonging to, or participated in by, two, and involving reciprocal action or affecting their mutual relation; as, opposition between science and religion.
    An intestine struggle, open or secret, between authority and liberty.   --Hume.
 5. With relation to two, as involved in an act or attribute of which another is the agent or subject; as, to judge between or to choose between courses; to distinguish between you and me; to mediate between nations.
 6. In intermediate relation to, in respect to time, quantity, or degree; as, between nine and ten o'clock.
 Between decks, the space, or in the space, between the decks of a vessel.
 Between ourselves, Between you and me, Between themselves, in confidence; with the understanding that the matter is not to be communicated to others.
 Syn: -- Between, Among.
 Usage: Between etymologically indicates only two; as, a quarrel between two men or two nations; to be between two fires, etc. It is however extended to more than two in expressing a certain relation.
    I . . . hope that between public business, improving studies, and domestic pleasures, neither melancholy nor caprice will find any place for entrance.   --Johnson.
   Among implies a mass or collection of things or persons, and always supposes more than two; as, the prize money was equally divided among the ship's crew.
 Be·tween, n. Intermediate time or space; interval. [Poetic & R.]
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 between
      adv 1: in the interval; "dancing all the dances with little rest
             between" [syn: betwixt]
      2: in between; "two houses with a tree between" [syn: 'tween]