[技巧] 蛙式：平游法 vs. 波浪式游法
Breeja Larson, front, and Rebecca Soni compete in the women's 100-meter breaststroke final at the U.S. Olympic swimming trials, Wednesday, June 27, 2012, in Omaha, Neb. Larson won the final. (AP Photo/Mark J. Terrill)Photo: Associated Press :( http://www.mysanantonio.co...
