学空乘专业好就业吗:用英文写一篇150字左右的"if you are an inventor,what will you invent?"的演讲稿

Someone as a inventor who can not invent anything may be say "Everything can be invent has been invented."But I think what he said is false.It is not hard to get a conclusion that some inventors lack of creative spirit. I think to be a inventor who must have a lot of different aspects of the knowledges and also have a great experience. So I should work hard nowadays.Specially,I should learn more and more useful principle and technology to make prepare for the future challenge.Maybe you will ask me a question that If you were an inventor, what would you invent.
I can answer the question you asked.If I were an inventor,I would invent a machine which can take the time back by operating.And only the honest and virtuous man can operate it.If it could be ture,people would be able to redo the events which they did not do so good as they supposed and people would have no sorry things in all their lives.Each things would be good and every body would be happy.How such a excellent world it would be!