?? ??????????????? ??????????? ???????? ?? ??? ???????????? ???, ?? ????????? ?? ?????????????? ???? ???.Make particular traps are full of water, For the reason that h2o in flooring drains pipes as well as other drainpipe traps tends to vaporize"?? ?????????? ??? ?????? ??????? ????? ??? ??? ?? ??????? ????????, ? ????? ???? ???????? ??? ????? ????