羽毛球怎么说英语：

Badminton is a racquet sport played using racquets to hit a shuttlecock across a net. It is an Olympic sport, and is played indoors or outdoors. The game can be played by either two opposing players (singles) or two opposing pairs (doubles). The objective is to hit the shuttlecock over the net and land it within the opponent's half of the court. A point is scored when one player or pair fails to return the shuttlecock back to the other side of the court. The players use their racquets to hit the shuttlecock and attempt to score a point by making it land within the other side's court. The shuttlecock can be hit with any part of the body, but the racquet must be used to hit it.

回旋羽毛球：

回旋羽毛球是一种羽毛球运动技巧，它可以用来增强对手的疲劳和提高进攻技巧。它的基本原理是，在一次击球中，服务者用自己的击球力量使球轨迹形成一个回旋曲线，使对手跳起来，由于跳起来的距离远大于平地击球时，使得它在击球时疲劳更大，而且容易出错，从而获得比赛优势。回旋羽毛球的关键在于球的击打方式，需要用自己的击球力量使球轨迹形成一个大的回旋曲线，使球从更远的位置回到击球者手上，这样就可以使得对手疲劳更大。