(强调看法)
used to emphasize your opinion
Is he stupid or what?他真是傻透了。
(表示不肯定)还是别的什么
used when you are not sure about sth
I don't know if he's a teacher or what.我不知道他是个教师还是别的什么。
释义来自《牛津高阶英汉双解词典》第 9 版