Butterfly stroke 蝶泳

　　While other styles like the breaststroke, front crawl, or backstroke can be swum easily even by beginners, the butterfly is a more difficult stroke that requires good technique to be feasible. It is the newest swimming style swum in competition, first swum in 1933. Interstingly, the butterfly kick was developed separately, and is also known as the "dolphin kick".

初学者也许能很容易地掌握蛙泳、自由泳或仰泳，但蝶泳却难得多，对游泳者的技术要求很高。蝶泳出现于1933年，是竞技游泳的几种泳姿中最新的一种。有趣的是，蝶泳的踢水动作是单独发展出来的，而且被叫做“海豚踢”。