也称重负损失，是国家在征收了关税后，对经济的保护成本，根本原因在于资源没有得到最优的使用，
不确定性和经济衰退的进一步加深已经使得这类保险保护成本在本周上升至历史新高。
The uncertainty and the deepening recession have sent the cost of insurance protection to record highs this week.
从世界范围看，环境会计的研究正处于起步阶段，对环境保护成本的研究更是少之又少。
In the view of the whole world, the research of the environmental accountancy is on its infancy, and the research of the environmental protective cost is much less.
不过，保护1400英里长的珊瑚礁的任务之浩大，在报告的描述中显得令人担忧，而且它可能严重低估了保护成本。
But it paints a grim picture of the scale of protecting the 1,400-mile-long reef, and may severely understate the cost of doing so.
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