What's at the Bottom of the Growing Rift Between South Korea and the US?
美韩之间愈演愈烈的分歧到底是什么?
据我所知“What's at the Bottom of ……”表示……究竟是什么?(或者究竟怎么样了?)并不常用.
常用的有:
what on earth are you doing?你究竟在干什么?
what the hell are you doing?你究竟在干什么?
what in the world are you doing?你究竟在干什么?