如果太阳能技术尚处于初级阶段，那盖茨家中是否完全不用太阳能板呢？
So if solar is such an infant technology, does that mean the Gates home is solar panel-free?
未硫化的复合橡胶，初级形状或板、片、带。
Compounded rubber, unvulcanized, in primary forms or in plates, sheets or strip.
再生橡胶，初级形状或板、片、带。
Reclaimed rubber in primary forms or in plates, sheets or strip.
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