现在人们外出，都得用车，但汽车尾气排放，污染环境，大煞风景。
Now when people go out, they have to use cars, but the exhaust emissions of cars pollute the environment and make the scenery worse.
我想发明一种汽车，遇到交通堵塞时，可以飞上天。遇水则可以变成船，在水上游。而且开动起来，没有尾气排放。这样的汽车既不污染环境，而且会给人们的出行带来方便。
I want to invent a car that can fly to the sky when there is a traffic jam. In case of water, it can become a boat, upstream of the water. And start up, no exhaust emissions. Such cars not only do not pollute the environment, but also bring convenience to people's travel.
我现在要掌握更多的科学知识，等长大了为人们造出方便、实用、环保的汽车。
Now I want to master more scientific knowledge, and when I grow up, I will build a convenient, practical and environmental friendly car for people.