The key function ecology in hterature translation. of translation in the construction of the world hterature decides the creative translation In hght of creative translation mechanism, the analysis of the five typical English versions of "Qi'nyuanchun· Changsha"shows that they are respectively characterized by straightforwardness in expression, poeticness in the choice of words, freedom in style, objectiveness in perspective and "three beauties" in pursuit as far as creative translation is concerned, contributing together to the world lite...