中间是一个小圆池，池里有金鱼，四周有扇贝壳边。

In the middle was a small round pond containing gold-fish and surrounded by a cockle-shell border.

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还有四周灰叶的死水一池。

And a pond edged with grayish leaves.

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消化池是一个由油布苫盖的双内衬污水池，有五个橄榄球场那么大。从现在开始的一周内，甲烷会导致油布膨胀。

The digester is a tarp covered, double lined lagoon the size of five football fields. A week from now methane will cause the tarp to expand.

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