例句：

　　I think we're completely lost. We've been driving around for hours and I've got no idea where in the world we are.

　　我想我们彻底迷路了，我们在这开车兜了几个小时但还是不知道我们究竟在哪。

　　It's the middle of summer so where in the world are you going to skiing?

　　现在是夏天，你究竟要到哪里去滑雪啊？