In summer, the weather is very hot. Swimming is popular. I like swimming, too. I think swimming is a very interesting sport. It helps us build a healthy body. And it makes us cool in the hot summer days.
夏天天气很热，游泳很受欢迎。我也喜欢游泳。我认为游泳是一项有趣的运动。它帮助我们建立一个健康的身体，使我们在炎热的夏天感到凉快。

Besides, we can call several friends to swim together. Also, we can play and have fun in the swimming pool. Anyway, swimming is a joyful activity in the hot summer.
除此之外，我们可以叫上很多朋友一起游。我们还可以在游泳池里玩耍。不管怎么说，游泳在夏天是一项快乐的活动。