However, with the high development of scientific tech nol o gies in modern age, the natural ecol o gy on the earth has been eroded and water re sourc es steadi ly worsened.

• 但是随著时代的进步、科技的高度发展，地球上的自然生态环境日渐遭受侵蚀破坏，水资源也渐渐失去昔日风貌。