/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: drshoaibahmed1 https://cdn.slidesharecdn.com/profile-photo-drshoaibahmed1-48x48.jpg?cb=1523560530 Experience is that marvelous thing that enables you:.... To recognize a mistake when you make it again.......