Riparian zones are the important transitional regions for exchange of substance, energy, and information between river ecological system and land ecological system, and have obvious marginal effect.
河岸带是河流生态系统与陆地生态系统进行物质、能量、信息交换的一个重要过渡带，具有明显的边缘效应。
2
How to deal with continuing actions happened before new law coming into effect and legal relations formed by old law is the transitional problems faced always by legislators.