往窗外看 是look out the window还是look out of the window

look out of the window 我往窗外看，除了云和天空外没看到别的东西。

I looked out of the window and saw nothing but the clouds and sky. 作者可能往窗外看过了，但是文学上，我们遇到它时并且在它作为一个文本时，并不需要往窗外看。The author may have been looking out of the window, but literature, as we encounter itand as a text, is not looking out of the window.