The butterfly stroke is one of the most difficult swimming strokes. It is sometimes referred to as "Fly" for short. Although it is the seconThe butterfly stroke is one of the most difficult swimming strokes. It is sometimes referred to as "Fly" for short. Although it is the second fastest stroke when done properly by a skilled athlete, it requires a very exact technique, strength and rhythm. It does requires a lot of practice to perfect it, but when you have it right, it is one of the most rewarding, respected and aesthetically pleasing swimming styles currently used in competition. Being able to execute a good butterfly stroke is the hallmark of a true competitive swimmer【更多更好看的电影电视剧请关注电影天堂!】查看全部