| 1. | In twenty - one century , since human beings are threatened by lacking of resources & energy , pollution , breaking of ecologic balance and natural disaster , circumstance protection becomes exigent . green economy is becoming a trend of development of the world
21世纪，面对资源短缺，能源匮乏、环境污染、生态破坏和各种自然灾害的威胁，环保成为世界各国的迫切任务，绿色经济成为世界发展趋势。 |
