架空式声像教学投影器: overhead projector for audio-visual teaching programme
旁: 名词1.(旁边) side 短语和例子马路两旁 both sides of the street; 站在路旁 stand by the roadside; 她坐在窗旁。 she sat at the window. 他坐在妻子的身旁。 he sat by the side of his wife.2.(汉字的偏旁) lateral radical of a chinese
