In the past, concern for the environment was viewed as a luxury; today, it is a necessity – a point grasped by some, but by no means all, economic architects yet.
在过去，人们把对环境的担忧视为奢侈品。如今，这是一项必需品。有些人认识到了这一点，但是，并不是所有的经济规划者也都有这样的意识。