What is the sky This question is very difficult to answer ,isn't it?The sky is space where there
问题描述：
What is the sky This question is very difficult to answer ,isn't it?The sky is space where there
答
天空是什么?这个问题很难回答,是不是?天空是一个空间,在那里.
（你没有讲完,我也只能翻译到这里了.）