作者采用了定量和定性研究工具，如问卷，访谈，和课堂观察。
Both quantitative and qualitative instruments are employed to gather data, including questionnaire, interviews and classroom observation.
在外语教学研究领域，多数研究者采用调查研究，如问卷调查。
Most of the researchers in the field of foreign language teaching and researching adopt surveys as an approach to a certain topic.
采访的决策分析方法如问卷调查和其他个人访谈的方法应该是相对于传统的方法。
The decision analysis interview method should be compared with traditional methods such as questionnaires and other personal interview methods.
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