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 buildingwire.
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。
2
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。
3
This solution may be far cheaper than having workmen put in cable ducts to wire the building.