The removal of dams remains controversial because of high restoration costs, loss of low-cost electricity, and the loss of water storage facilities.

大坝的拆除仍然存在争议，因为高重建成本，损失低成本电力，以及损失蓄水设施。

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Although removal of excessive fluoride from drinking-water may be difficult and expensive, low-cost solutions that can be applied at a local level do exist.

虽然从饮用水中去除过量氟化物可能很困难并且费用高昂，但仍然存在可在地方一级采取的费用低廉的解决办法。

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Removal or amendment of a control procedure may not significantly increase the risks associated with the operation of the system and may result in cost savings.

删除或者修正控制程序的时候，可能会使操作系统会增加一些不重要的风险，但能够节省成本。

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British parliamentarians have called on the government to introduce a tax on chewing gum, with the money raised going toward the cost of gum removal.

CNN: New gum could mean sticky end for mess

And for all the grief and cost of Saddam's removal, that particular risk now threatens the United States no longer.

CNN: Bush's answer to 'Why Iraq?'

The French government is recommending and will pay for the removal of the banned implants, and will cover the cost of their replacement if the original treatment was for breast reconstruction following cancer.

BBC: How France and UK differ on implants