You can also lock the content with a password. By password protecting your post, only users with the password will be able to view your post.

您可以添加个调查问卷到您的话题，该调查问卷会显示在话题中

添加调查问卷项

分享您现在的地理位置，读者会知道你在哪里。

引用来源链接，帮助读者确认事实或发现更多细节。