But I should highlight that somewhere between 60 and 70 per cent of the applications really are in conductivity, and most of that is in generation and distribution and in building wire.
我要强调的一点是,60 - 70%的铜是用于导电的,其中很大一部分用于发电、输电以及电线生产。
Building more lemon batteries and connecting them with a metal wire from "+" to "-" adds the voltage from each cell.
我们可以用前面的方法做更多的柠檬电池,并用金属线将他们之间的正负极连接起来来让电压加成。
This solution may be far cheaper than having workmen put in cable ducts to wire the building.
这种解决方案比请工人铺设电缆管道来给建筑安装线路要便宜得多。
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