Follow links to the link for sample15.mpg, and then click on it to begin video playing.

沿链接找到sample15 .mpg的链接，然后单击它，开始播放视频。

youdao

Follow links to the link for sample15.mpg, and then click on it to begin video playing.

沿链接找到sample15 .mpg的链接，然后单击它，开始播放视频。

youdao