在具体实施上，可以向人们向空气中排出污染物的权利。
FRIEDMAN When you do it now, by selling the right to emit a certain amount of pollutants into the air.
数学探究教学在具体实施中存在诸多问题，且教学效果不理想。
In practice, there were many questions in explorative teaching of mathematics.
网络环境下的在线学习在具体实施过程中出现了许多实际的问题。
Study on line in net work environment has many problems existing in operating.
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