Jerry also made some tilting covers to keep "rain" out of the vertical exhaust pipes.

杰里还提出了一些倾斜包括保持“雨”的垂直排气管。

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Also channels to separate rain and polluted water, guide pipes and five monitor stations are set around the site to monitor the quality of ground water regularly.

填埋区周边还建有雨污分流截洪沟和导排管线和五个监测井，定期对地下水质进行监测。

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The installation process, the buckets of rain water pipes and open closure measures to be taken by mouth.

安装过程中，管道及雨水斗的敞开口应采取封堵措施。

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The charity said that overflow pipes which prevent sewage backing up into drains and houses in times of heavy rain are necessary in an emergency.

BBC: Charity warning over raw sewage discharge levels