Secondly, although a lot of economists research effective competition on the basis of the theory of SCP, the weakness of the former researches is lack of effective competition indexes.是什么意思_Secondly, although a lot of economists research effective competition on the basis of the theory of SCP, the weakness of the former researches is lack of effective competition indexes.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句