The thing is I cannot know if the upload request is authorized, otherwise everybody can change profile picture of anybody.

问题是我不知道上传请求授权，否则每个人都可以改变任何人的照片。

youdao

If you change your profile picture or add a friend, the mini-feed will display a message about it.

如果你更改了个人档案头像或添加了一个好友，迷你更新区域会相应的显示出一条相关信息。

youdao

When you change your profile picture to the one that makes you look 15 pounds lighter, it does not make you 15 pounds lighter.

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