答案優(yōu)選Environmental Design is a useful professional—one important branch on the great tree of knowledge.
　　Students of environmental design learn to design indoor and outdoor public and private spaces where people live, work, and play.
　　As we all know，we even desperately need an environment where we can live，so environment is the source of life.Art design comes from all kinds of needs of mankind and is an indispensable part of life，design is very important to us, we can not live without environment design.