much work to be done to solve the problems of pollution and transportation
Related Translations:
解决: 1.(处理问题) solve; resolve; settle 短语和例子解决困难 overcome a difficulty; find a way out of a difficulty; 解决赔偿 settle a claim; settle a bill; 解决问题 solve a problem; settle a dispute; 解决顾客疑问 meet cus