ขนาดวิดีโอ: 1280 X 720853 X 480640 X 360
แสดงแผงควบคุมโปรแกรมเล่น
เล่นอัตโนมัติ
เล่นใหม่
Thank you for putting this here with subtitles so deaf people can access this. Excellent talk, I've always wanted to learn more.
Thank you for putting this here with subtitles so deaf people can access this. Excellent talk, I've always wanted to learn more.