英语词汇observational method简单造句、意思、用法及例句-英语例句辞典

单词	observational method
例句	原声例句历年英语专业八级真题听力（专项） The field experiment represents the most extreme form of intervention in observational methods. 现场实验的干涉形式是所有观测方法中最极端的。历年英语专业八级真题听力（专项） The essential difference between field experiments and other observational methods is that researchers have more control in field experiments. 现场实验和其他观察方法的本质区别在于，现场实验中研究人员有较大的控制权。
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英语例句辞典收录519880条英汉例句词条，基本涵盖了全部常用单词的造句方法及例句，是英语学习的有利工具。