I presume it's not only acceptable, but also required to have a cancel button for things like downloading files?

我觉得这不仅是可以接受的，也很必要为比如下载文件的过程加入取消按钮。

youdao

I presume it's not only acceptable, but also required to have a cancel button for things like downloading files?

我觉得这不仅是可以接受的，也很必要为比如下载文件的过程加入取消按钮。

youdao