Phelps is just returning to competitive swimming after taking more than a year off.

菲尔普斯在休息了一年多之后刚刚重返竞技游泳项目。

However, on May 28 this year, Sun completed his 4-year, 3-month suspension, marking his return to competitive swimming.

不过，今年5月28日，孙杨完成4年3个月的禁赛，重返游泳比赛。

Masters swimming is a special class of competitive swimming to promote health and friendship among participants.

游泳大师赛是一门特殊的竞技游泳课程， 旨在促进参与者之间的健康和友谊。

Jumping in the pool for our next sports report, in competitive swimming, the butterfly stroke is the one that requires the most upper body strength.

我们下一篇体育报道的跳水，在竞技游泳中，蝶泳是最需要上半身力量的。