俄语

-о́стр〔形〕

  1. (只用全)双(面)刃的
    ～ меч双刃舰?
  2. 〈书〉互有利弊的，有利有弊的，能引起两种相反结果的
    ～ое реше́ние互有利弊的决定
    ～ до́вод能引起两种相反结果的论据.
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