The information needed is gained mainly through interview, observing in the spot, collecting files, questionnaire investigating and so on.
研究主要通过访谈、实地观察、收集文件资料以及问卷调查等方法获取资料。
The information needed is gained mainly through interview, observing in the spot, collecting files, questionnaire investigating and so on.
研究主要通过访谈、实地观察、收集文件资料以及问卷调查等方法获取资料。
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