为找出答案，您可以使用 whoami 命令来返回当前用户的名称。
To find out, you can use the whoami command to return the name of the current user.
一些电脑科学家想找出这个问题的答案，所以他们修改了Android移动电话平台，以此来为素有从手机中发出的数据贴上标签。
Some computer scientists wanted to find out. So they modified the Android mobile phone platform to tag all data apps sent from the phone.
若某种产品价格为85人民币，通过你的努力价格降为75人民币，那么你节省了百分之多少？找出正确的答案。
If the price of a product is 85rmb and it is reduced through your efforts to 75rmb, what percentage savings did you obtain? Check the correct answer.
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