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MX  门槛=20%  门=cost>80  步长 up=0.3 down=0.3  条数=3
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20230610_ManalPromotion / Slot car race set词组
  kw    pista de carritos               0.40 → 0.44    up    acos=0.0%    cost=0.13     clicks=1
  kw    autopista electrica             7.50 → 5.25    down  acos=45.6%   cost=676.57   clicks=198

SP Campaign Recommendation - Suggested Products - 03/30/2022 a70a69 / AGM MASTECH - Slot Cars/Racing
  kw    pista electrica de carreras     3.92 → 4.22    up    acos=13.8%   cost=289.10   clicks=94

[MX] 过暗闸拦截 3 条（bid 已低于自均 CPC 的 1/3，再降也拿不到量，停止降价）：
  kw    agm                          bid=0.48   自均CPC=1.659   比值=1/3.5  acos=85.9%   SP Campaign Recommendation / AGM MASTECH 
  kw    agm mastech                  bid=0.5    自均CPC=2.788   比值=1/5.6  acos=inf     SP Campaign Recommendation / AGM MASTECH 
  kw    pista carros electrica       bid=0.7    自均CPC=3.872   比值=1/5.5  acos=inf     20230610_ManalPromotion / Slot car rac