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MX  门槛=20%  门=cost>80  步长 up=0.3 down=0.3  条数=4
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20230610_ManalPromotion / Slot car race set词组
  kw    pista de carritos               0.36 → 0.40    up    acos=0.0%    cost=0.13     clicks=1
  kw    autopista electrica             9.90 → 7.50    down  acos=37.7%   cost=559.12   clicks=179

SP Campaign Recommendation - Suggested Products - 03/30/2022 a70a69 / AGM MASTECH - Slot Cars/Racing
  kw    pista electrica de carreras     3.62 → 3.92    up    acos=11.0%   cost=230.79   clicks=74
  kw    agm                             0.69 → 0.48    down  acos=85.9%   cost=1854.79  clicks=1118

[MX] 过暗闸拦截 2 条（bid 已低于自均 CPC 的 1/3，再降也拿不到量，停止降价）：
  kw    agm mastech                  bid=0.5    自均CPC=2.785   比值=1/5.6  acos=inf     SP Campaign Recommendation / AGM MASTECH 
  kw    pista carros electrica       bid=0.7    自均CPC=4.103   比值=1/5.9  acos=inf     20230610_ManalPromotion / Slot car rac