细节
- 代码
- 14834098
- 分门别类
- Live action video
- 长度
- 00:21
- 长宽比
- 16:9
- 帧率
- 29.97
描述
The man solves mathematical problems in a notebook and prepares for training. Man writes with a pen formula in a notebook close up
The man solves mathematical problems in a notebook and prepares for training. Man writes with a pen formula in a notebook close up