What's the difference between selective sync and ignoring a file?
选择性同步和忽略文件有何区别？
With selective sync, you can choose which folders you’d like to store on your computer’s hard drive from all of the folders you have stored in your Dropbox account. If you set a file or folder to be ignored by Dropbox, it won’t count toward your storage space.   Learn how to set a Dropbox file or folder to be ignored.
利用选择性同步功能，您可以从 Dropbox 帐户内存储的所有文件夹中选择要存储到电脑硬盘上的文件夹。如果设置需要 Dropbox 忽略的文件或文件夹，则该文件或文件夹将不会计入您的存储空间。
了解如何设置要忽略的 Dropbox 文件或文件夹。