The projected images are aligned such that they form a nearly seamless image on the projectionscreen.
投影的图像被对齐，从而在投影屏幕上形成一幅几乎无缝的图像。
2
What's your impression on language training classroom? One room? One ProjectionScreen? One teacher facing a group of students?
你印象中的语言培训课堂是什么样子的？一个教室、一块投影屏、一个教师对着一群学员一字一句的授课？
3
Another lighting problem, brought about since the introduction of data projectors into classrooms, is glare reflecting off the projectionscreen into pupils' eyes.