1. Traditional visual equipment includes projection media such as overhead projectors, slide projectors, 16mm movies, videocassettes and non-projection media such as chalkboards.
常规演示器材包括：投影设备以及非投影设备，前者指高射投影仪，幻灯片放映机、16毫米电影、录像带等等，后者指黑板、白色书写板、挂图、支架等等。
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2. They hung orange and black crepe paper along the tops of the chalkboards, pasted paper pumpkins and black cats on the walls.
她们在黑板上沿挂上橙色和黑色的绉纸，在墙上贴纸裁的南瓜和黑猫。
1. Desks are refashioned into tables and chalkboards are displayed in the front and back of the dining room.