If there was one futuristic invention that you could own, what would it be?

如果你能拥有一项未来的发明，你希望是什么？

This is a futuristic novel.

这是一部幻想未来的小说。

Will time travel ever become a reality?

时光旅行真的会成为现实吗？

Time travel may be imperceptible.

时间旅行也许是不可感知的。