/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: gaxu https://cdn.slidesharecdn.com/profile-photo-gaxu-48x48.jpg?cb=1687493198 Cu畛�c s畛�ng l�� s畛� n畛� l畛�c kh担ng ng畛�ng, tr畉�i nghi畛�m kh担ng ng畛�ng nh動ng gian kh畛�, nh畛�ng b畛�c x炭c, nh畛�ng m但u thu畉�n,..��i畛�u quan tr畛�ng l�� v動畛�t qua ch炭ng th畉� n��o, v�� nh狸n nh畉�n nh動 th畉� n��o???