相关例句

• These watercourses are important for the local ecosystem. (这些水道对当地生态系统很重要。)
• The watercourses in this area are often polluted. (这个地区的河道经常被污染。)
• We need to protect these watercourses. (我们需要保护这些河系。)
• Some ancient watercourses have dried up. (一些古老的水道已经干涸了。)
• The watercourses are the main transportation routes in the past. (这些水道在过去是主要的运输路线。)
• Watercourses provide habitats for many animals. (水道为许多动物提供栖息地。)
• They are planning to clean up the watercourses. (他们正计划清理这些渠道。)
• The watercourses here are very beautiful. (这里的河道非常美丽。)
• The watercourses connect different lakes. (这些水道连接不同的湖泊。)
• Pollution in watercourses is a serious problem. (水道中的污染是一个严重的问题。)