【孙杨】伦敦奥运会 400自由泳决赛 NBC解说【中英双语字幕】
梦觉教游泳 -- ”自由泳入门“ ：自由泳腿的基本动作和练习
自由泳入门 番外7 手和腿的配合
29 划手：空中移臂--自由泳入门第二版--梦觉教游泳
How To Diagnose And Fix Your Sinking Legs
How to Keep Your Legs Fom Sinking in Freestyle
How to Stop Legs from Sinking in Freestyle
3 Front Crawl technique tips: Swim faster freestyle
The Pull - How To Swim Front Crawl | Freestyle Swimming Technique