It became obvious to management that it needed to clean up its power if it was going to control the cost of complying with strict sanitation standards.

要遵守严格的卫生管理标准，为了控制这方面的成本，对于管理层来说，显然需要清洁电源。

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Some special high technical content, such as cement mixer, powder materials, high concrete pump truck, highway management, clean sanitation inspection car etc, it will continue to be popular.

一些技术含量高的专用车，例如水泥搅拌车、粉粒物料运输车、高层混凝土泵车、高速公路检测管理车、清洁环卫车等等，都将持续走俏。

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According to a study by Frank Rijsberman, director-general of the International Water Management Institute in Colombo, Sri Lanka, improving the delivery of clean water and sanitation to the poor would be a highly cost-effective way to use additional aid to developing countries.

ECONOMIST: Economics focus