Amid the material prosperity of today, it really is hard to imagine that only 30 or 40 years ago in the 1960s, food shortages were a matter of grave concern in countries around the world, particularly in the many developing nations of Asia, Africa and Latin America.
在物質豐饒的今日，實在很難想像，也不過三、四十年前的六○年代，世界各國都還汲汲憂心於糧食短缺問題，尤其是未開發國家眾多的亞洲、非洲和拉丁美洲。