Such sigh absolutly come from no excuse. such as suddenly thought of life and death.
若干感慨，简直无来由，比如忽然想到生死。
The survey is completely anonymous and voluntary, you are absolutly free to skip any one or all of the survey questions.
问卷采用全匿名方式自愿作答，您可以随时选择放弃回答问卷的任何或所有问题。
The survey is completely anonymous and voluntary, you are absolutly free to skip any one or all of the survey questions.
问卷采用全匿名方式自愿作答，您可以随时选择放弃回答问卷的任何或所有问题。
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