???????????????? ?? ?????? ?? ??????? ???????? ???????? ???? ???????????? ???? ???? ??? ????????? ?????? ????? ???????? ???? ????? ?????? ??????? ????????? ???? ??????? ?? ?? ??? ??????? ?????????? ???? ????????? ?????? ??????? ?????? ??? ???? ????? ???????? ??? ??????? ???????????? ????? ???????(?? ?? ??)Basic safety starts with comprehension how