翻译"江湖"?要求最地道贴切

江湖 all corners of the country
流落江湖：live a vagrant life
走江湖：tramp from place to place to make a living
讲江湖义气:be loyal to brotherhood
江湖骗子：swindler ; charlatan
江湖医生：quack ; mountebank
江湖艺人：itinerant entertainer

a special world for the people sharing the same idea
武林江湖 the world for the people expertise in kongfu