physical alterations meaning in English
自然改变
Examples
- The freshwater habitats around the rivers and streams have been severely modified by , for instance , the construction of large dams and physical alterations of river flow by straightening and deepening of river courses
另一方面，河流流域的淡水生境亦屡遭修筑大坝河流改道及水流监控等工程改动。现时大部分河水已不适宜饮用，土壤亦受污染。