???? ?? ?????????????????????????????????????????? ? ?????? ??????????????????????? ????? ????? ??? ????????????????????? ????? ?????{??? ?? {|??|???|??|???|??|???????|???????|???????|???????|?????????????|?????????????|?????? environment ?????within ???????? ??????????? ???? ?????????? {???????????|???????????|?????|?????|??????????|???????????…