Signaroundus. 　　Withmorerulesexisting,signsarebecomingcommontoeverybody. 　　Itiseasyforustofindthe"nosomoking"signsontheundergroundandintheatres. 　　Moreover,therearesignsstandfordifferentdirectionsontheroadanddistinctbansforeverycircumstance. 　　Forexample,theremaybea"throwin"signbesidearubbishbin,anda"dangerous"signonthesideofadeepswimmingpool. 　　Signsaroundusareimportantbecausetheytelluswhatweshouldorshouldn'tdoatthemoment. 　　Everycitizenisobligedtoobeysignsaroundus.