/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: nhatdinhdo https://public.slidesharecdn.com/v2/images/profile-picture.png Khi b畉�n ng畛�i c畉�nh m畛�t c担 g叩i ��叩ng y棚u, hai gi畛� d動畛�ng nh動 hai ph炭t. Khi b畉�n ng畛�i tr棚n m畛�t c叩i l嘆 n動畛�ng ��畛� l畛�a, hai ph炭t t動畛�ng nh動 hai gi畛�. ��坦 l�� s畛� t動董ng ��畛�i.(Einstein)