A hundred years ago we were looking at coal, of course, and we were looking at whale oil and we were looking at crude oil.
قبل 100 سنة كنا ننظر إلى الفحم، بالطبع، وقد كنا ننظر إلى زيت الحوت وقد كنا ننظر إلى زيت النفط الخام.