网站首页 汉语 德语 英语
The procedures or methodology of panel studies.
1930s; earliest use found in Public Opinion Quarterly.
礼仪网英汉双解词典包含236457条英汉翻译词条,涵盖了常用英语单词及词组短语的翻译及用法,是英语学习的必备工具。