英语翻译
The term community development gives a form suited to the twentieth century to the longstanding tendency of membership of a group to act together to improve the life-style of the group as a whole.
Whereas previously this may have occurred through movement to new areas or emigration,this became increasingly difficult over time and greater emphasis has,therfore,been placed on in situ improvement which links community development so strongly with the concept of self-help.
我希望是人工翻译的