We have a classroom, in order to use shading, black velvet curtain, a time after which the teachers found that many students attend classes or even anandria is listlessall.

• 我们有一间电讲堂，为了遮平，窗帘残部拔取不白色绒布，一段工夫后，教练发掘不小不小都同教不下课注意力不集洋，甚至筋疲力尽。