英语作文如下：
I have a great invention
My invention is a robot. It has a wise mind, a compassion heart. and a strong body It can protect our homeland and let people live a peaceful life.
I can see when the war comes, children lost theirbeautiful schools and bright classrooms, when the disaster comes; they lost their close relatives and lovely friends. And when the accident comes, they lost their joyful faces and hearty laughter.
However, by using this robot, the war can be stopped when we touch a button, so that people will drop their weapons and live friendly. By using this robot, disasters and accidents can be predicted; therefore people will stay away from danger.
This great invention will make wars and disasters never occur again, we need to work together to protect our homeland, so there will be a greater and more wonderful world in the future!
