您要查找的是不是：
- urban river and lakes in Beijing 北京城市河湖
- Urban river and lake sediment treatment 河湖底泥处理
- Many rivers and lakes are polluted. 许多河流和湖泊被污染。
- People go swimming in rivers and lakes. 人们到江湖中游泳。
- How does the humanity conquer the rivers and lakes? 人类如何面对江湖?
- The swindle of rivers and lakes. 江湖骗局。
- As a result, many rivers and lakes are now dead. 结果,许多河流和湖泊现在已经不复存在了。
- There are countle rivers and lakes on earth. 世界上有无数河流和湖泊。
- There are many rivers and lakes on the earth. 地球上有许多江河和湖泊。
- There are countless rivers and lakes on earth. 世界上有无数的河流和湖泊.
- Garbage pollutes our rivers and lakes. 垃圾污染我们的河川湖泊。
- Read here for Making rivers and lakes. 阅读这里制作河流和湖泊。
- On nutritional status and blue-green algae water bloom of urban rivers and lakes in Beijing 北京城市河湖营养状态与蓝藻水华研究
- Rivers and lakes provide us with water transport and irrigation. 江河湖泽给我们以舟楫和灌溉之利。
- When summer rolls round,people go swimming in rivers and lakes. 每年到了夏季，人们便去江湖里游泳。
- Rivers and lakes contain a wide variety of fish life. 爱尔兰的河流和湖泊有各种各样的鱼类。
- When summer rolls round, people go swimming in rivers and lakes. 每年到了夏季，人们便去江湖里游泳。
- Polluted rivers and lakes have also been a cause of death. 污染的河流和湖泊也已成为一个导致死亡的原因。
- urban rivers and lakes 城市河湖
- He discovered many rivers and lakes, including the Victoria Falls. 他发现了许多河流和湖泊，包括维多利亚瀑布。
