早在13世纪，这种哥特式建筑是为了存储教堂屋顶上的淌下的雨水建造的，他们的嘴巴就像是喷泉口。

They were incorporated into gothic stonework as early as the 13th-century to keep rain water off cathedral roofs, their mouths serving as the ejector spout.

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邻里之间分享他们拥有的一切—食物，水和电—嘴里一口一个我们头上有一个屋顶是多么幸运啊。

Neighbors sharing whatever they have - food, water, electricity - and saying again and again how lucky they are to have a roof over their heads.

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平均来说，一个普通四口之家每月用电量为800千瓦时，而大部分住宅屋顶太阳能电池板的发电量低于10千瓦。

A typical family of four people USES, on average, 800 Kwh per month and most residential rooftop units are of under 10kw capacity.

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