环境工程专业英语
Professional English for Environmental Engineering
Han Xiaogang College of Resources and Environment Fujian Agriculture and Forestry UniversityTel: 15059188544，QQ:103475685
English Proverb
The only person you should try to be better than, is who you were yesterday.
你唯一应该超越人，是昨天自己。
Review of the Last Lesson