what is it怎么回答呀

　　What is it that's troubling you?

　　是什么事使得你愁眉苦脸？

　　What is it then? Something's up, isn't it?

　　那是怎么回事呢？出问题了，是吗？

　　What is it like to steer a ship this size?

　　驾驶这么大的船感觉怎么样？

　　"What is it?" I wondered.

　　“这是什么？”我很好奇。

　　What language is it they're speaking?

　　他们讲的是什么语？