Space required for modern biological waste treatment plants is large. 现代生物废品处理站的占地面积很大。
The scientists are exploring the technologies required to perform environmental restoration and waste management in a cost-effective manner. 科学家正在探索开发能以经济的方式进行环境恢复和废品处理的技术。
美
[weɪst dɪ'spoʊzəl]
