新陈代谢

Explanation: Chen obsolete; substitute for; thank wither, decline. That organisms constantly replace the old material with new material process. Also refers to the development of new things are emerging to replace old things. 　　Usage: The main predicate; as subject, predicate, attribute; means the replacement of organisms 　　Source: Mao Zedong's "On Contradiction" in the world always replace the old with new, always metabolism, blow away the cobwebs or the ever-changing. " 　　Examples: The world, always replace the old with new, always the case ~, blow away the cobwebs, or introduce new. (Mao Zedong's "On Contradiction") Thesaurus Group:  Without destruction there can be no construction, eradicate and foster with the utmost vigour; utterly destroy and vigourously establish the supremacy of, get rid of the old to leave the place for the new, Chen announced a new push, discard the old ways of life in favor of the new, retrofit, exhalling the old and inhalling the new; get rid of the stale and take in the fresh, New abandoning the old pity, Lianxinyanjiu, literal: to like the new, and hate the old, Take in the fresh Spit it, see off the old and welcome the new; ring out the Old Year and ring in the New, see off the old and welcome the new, see off those who depart and welcome the arrivals, Choose the good and long, Design New translation vicissitude, metabolism, Metabolism