0:00/0:19
倍速
  • x2
  • x1
  • x0.5
举报

Teacher and children in chemistry class. Pupils and teacher watching experiment in science class

视  频 ID:  1007725285
版      权:  LimArt163
视频长度:  0:19
横纵比率:  1.90:1
所属分类:  教育 
商业用途(模特授权书存在站酷海洛)

如何选择