Fair use permits me, at my expense, to make copies of a scientific article and distribute it to a class so that we can have an educational discussion about it.

合理使用允许我在成本归已的情况下复制一篇科学文章发给课堂里的学生，依此针对它进行教学性的讨论。

youdao

That said, Waste Management's size is letting it gain customers at rivals' expense, and here and there permits it to bump up prices, especially on landfills it operates.

FORBES: Talking Trash

The cost to get coal and natural gas out of the ground is going up, and to that expense must be added the cost of the carbon permits that Congress and the presidential candidates are contemplating.

FORBES: Brownout