Theme Ideas: Visiting a popular city park Joining a university sports team Biking around a famous lake Attending an outdoor music festival Going on a mountain hiking trip Taking part in a community clean-up event Organizing a barbecue with friends Experiencing a traditional Chinese festival outdoors

主题思路： Visiting a popular city park 市中心热门公园的游览 Joining a university sports team 参加大学的体育队伍 Biking around a famous lake 环湖骑行 Attending an outdoor music festival 参加户外音乐节 Going on a mountain hiking trip 进行一次山地徒步旅行 Taking part in a community clean-up event 参与社区清洁活动 Organizing a barbecue with friends 与朋友一起举办烧烤聚会 Experiencing a traditional Chinese festival outdoors 体验户外的传统中国节日