Translations:Surveys - introduction/130/zh-cn
From LimeSurvey Manual
注意 : 如果这个功能被激活，不管其他设置如何，回复的提交日期和令牌的完成日期总会设置成 1980-01-01 00:00。Invalidating the submission date ensures no match with the web server logs where the token key might show up when a survey is started. Invalidating the token completed date guarantees that you cannot align the order of submitted responses to the order of the token date/time.