zhè / ge / huó / dòng / fēn / chéng / sān / ge / nián / líng / zǔ / měi / zǔ / dōu / yǒu / bù / tóng / de / bǐ / sài / xiàng / mù

这个活动分成三个年龄组，每组都有不同的比赛项目。

This activity is divided into three age groups, with different events for each group.