???? ?????? ??? ????????? ? ??? ????????? ??? ?????????? ??? ??? ????????.???? ?????? ??? ????????? ? ??? ????????? ??? ?????????? ??? ??? ????????.Utilized by Fb to deliver a number of advertisement goods such as serious time bidding from 3rd party advertisers.???????????? ????? ????? ????????? ?? ?????? ???????? ?????????? ??? ??????????? ?????.?