operativeadj.有效的；至关重要的；运作的n.技工；侦探operative puzzles手术难点operative current动诅流operative mistake[法] 执行中的错误operative service运营服务operative removal动手术切除operative approaeh手术入路operative mechanis运作机制operative approach手术入路Operative outcomes手术疗效Operative abortion人流手术