long distance overhead projector

例句：

1. 1. Thislong distance overhead projector is very usefulfor presentations in large classrooms.
   这款长距离投影仪在大型教室的演示中非常有用。
2. 2. The teacher used the longdistance overhead projector to show the studentsthe diagram of the solar system.
   老师使用长距离投影仪向学生们展示了太阳系的图解。
3. 3. The long distance overhead projectorwas a game-changer for remotelearning during the pandemic.
   长距离投影仪在疫情期间为远程学习带来了革命性的改变。