并且还有两块太阳能电池板（一块在屋顶，另一块在后院）这两块电池板在有阳光的时候贮存电能，并通过两个不同的系统来提供照明用电和热水。
There are two photovoltaic arrays (one on the roof, another in the backyard) that produce electricity on sunny days, and a separate system that provides solar hot water.
（和电池相比，）这是一种“低能量密度”设备，电能被直接存储在两块静止的导电板上。
This is a low energy-density device, which stores electricity directly by charging two conductive plates with static.
Bloom Energy制造的这种小型的燃料电池盒名叫“Bloom Box”，只需两块即可为一个美国家庭供电(乡村地区用电较少的家庭，则仅需一块)。
Bloom Energy are producing tiny fuel cell boxes they call "Bloom boxes." Two of these can apparently power a U.S. home (and only one for homes in countries that use less power).
应用推荐