It was recorded in the documents and the characters in the frescos, stone work and paintings provide the picture and visualmaterials of the period.
文献有记载，当时的壁画、石像、绘画中的人物提供了金元时期的图像资料。
2
Audio-visualmaterials including oral history interviews, traditional folk songs, performances of puppets and Cantonese operas, museum weekend lectures, etc.
视听资料，包括口述历史访问、山歌、传统木偶及粤剧表演，以及博物馆历年来举办的周末讲座等。
3
There are 80 of the learning materials are from America. And we use audio visualmaterials to help students learn English efficiently and to make learning fun!