/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: xuanthuArs https://cdn.slidesharecdn.com/profile-photo-xuanthuArs-48x48.jpg?cb=1523546966 ��畛�ng n坦i t担i l�� Einstein c畛�a Vi畛�t Nam, m�� h達y n坦i Einstein l�� t担i c畛�a ng動畛�i do th叩i