Some of these efforts include energy efficiency, new drainage systems, and improved transportation infrastructure.

这些努力包括能源效率、新的排水系统以及改进的交通基础设施。

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The presence of drainage systems and public baths showed advanced standards of hygiene and sanitation and ingenious planning.

排水系统和公共浴池的出现表明了高标准的卫生学与卫生设施，以及有独创性的规划。

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"The ancient drainage systems are thought to have originated in the wet climate of the late Cretaceous, they are that old," Hutchinson said.

Hutchinson说，这些古老的排水系统是在白垩纪晚期为了应付潮湿的气候而被想到的，它们已经是这样的久远。

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The lack of permeable surfaces are loading drainage systems and increasing the risk of flooding.

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Neighbours have raised concerns that it could create a lack of parking in the area and cause problems with the drainage systems.

BBC: Coupee Lane site

We are working hard to persuade planners and developers to use sustainable urban drainage systems, which collect and treat urban run-off before it reaches rivers.

BBC: English and Welsh rivers 'improving'