源于百度，仅供参考。I will invent a time machine in the as it 's been my dream in my life. Time machine allows people to travel back in time to prevent disaster to happen. It also allows people to tavel into dinstant future to find out solution for Incurable illness including cancer and aids. However, this machine may be abused by people to create chaos in our world or even completely change our history. Therfore, security features are essential for my invention. The future invention of time machine will definately bring more advantages for human being.
写一篇关于小发明的英语作文，字数80以上，随便什么都行，就像书上的一样