这几天，只要一刮风，马路上、学校里许多被丢弃的废纸就会漫天飞舞（wǔ），环境（jìng）被严重污（wū）染了。我想发明一种汽车样的保护环境（jìng）的机器（qì）人。它在人的遥（yáo）控指挥下，每天在街上、操（cāo）场上巡逻（xúnluó）。它一看见垃圾（lājī） These days, as long as a windy, the road, many abandoned school waste paper will be flying around, the environment was heavily fouled (wū). I want to invent a car-like machine that protects the environment. Under the command of a human being, it patrolled every day in the streets and on the ground. It saw rubbish