Ad placement is based on a combination of maximum cost-per-click (CPC -- how much you are willing to pay per click) and clickthrough rate (ctr).是什么意思_Ad placement is based on a combination of maximum cost-per-click (CPC -- how much you are willing to pay per click) and clickthrough rate (ctr).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句