各种社交媒体平台上有数十亿用户。

There are billions of ___users on various social media platforms.

这座城市正在为公共交通用户改善设施。

The city is improving facilities for public transportation ___users.

这次软件更新的目的是让用户的任务更简单。

The software update is designed to make tasks easier for the ___user.