reversal

reversal
noun
  1. a change to an opposite direction, position, or course of action
    反向,反转,倒转,颠倒
    a dramatic reversal in population decline in the Alps.
    阿尔卑斯山地区人口下降的大逆转。
    [mass noun]the reversal of tidal currents.
    潮流的回流。
    ■(Law)an annulment of a judgement, sentence, or decree made by a lower court or authority
    (律)(对下级法院或权力机构裁决、宣判或法令的)撤销,废弃
    a reversal by the House of Lords of the Court of Appeal's decision.
    上议院对上诉法院判决的撤销。
    ■an adverse change of fortune
    (运气)逆转
    the champions suffered a League reversal at Gloucester last month.
    上月冠军队在格洛斯特联赛比赛中运气逆转。
    ■[mass noun](Photography)direct production of a positive image from an exposed film or plate; direct reproduction of a positive or negative image
    (摄)反转,逆转
语源
  1. late 15th cent. (as a legal term): from the verb reverse + -al
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