The first and perhaps key factor is the ignorance of sanitation.

第一个也是最重要的一个因素是人们缺乏卫生意识。

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And ignorance to universal existence of transaction cost covers the essence of problem and makes us missing the key factor of empirical analysis.

而广泛存在的对交易费用的忽视，更掩盖了问题的实质，错过了实证分析最关键的要素。

youdao

And ignorance to universal existence of transaction cost covers the essence of problem and makes us missing the key factor of empirical analysis.

而广泛存在的对交易费用的忽视，更掩盖了问题的实质，错过了实证分析最关键的要素。

youdao