其他的指标，例如屋顶建材的销售，也指向更繁忙的经济活动。
Other indicators, such as sales of roofing material, point to busier economic activity.
此外，智能电网更容易集成间歇式和分散型电源，例如屋顶的太阳能电池板、后院的风力发电机等。
Moreover a smart grid will make it easier to co-ordinate the intermittent and dispersed sources of power, from rooftop solar panels or backyard wind-turbines, for example.
传统材料如石材、木材和芦苇以现代的方式得到应用，例如屋顶的板材、石墙的开口和厨房的天花板。
Traditional materials such as stone, wood and reeds are applied in a contemporary way, as for example the planking of the roof, the openings in the stone walls and the ceiling of the kitchen.
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