如果不能自行安装，请向系统管理员咨询安装。
Ask your system administrator about installation if you are not able to install by yourself.
除非你自行安装，否则这些在桌面版上是找不到的。
You would not find these on the desktop version unless you install them yourself.
在你安装自行车时，想想你要怎么旅游。
As you're outfitting your bike, think about how you want to get around.
自行拔掉电池然后再安装。
自行拔掉电池然后再安装。
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