Either we did what we did or we waited for 10 extra years to have electricity at the present cost.

要么我们继续我们所做的事情，要么再等10年才能以目前的价格获得电力。

But at half-a-crown the stone, which at this moment (February 1773) I understand to be the common price, such a hide would at present cost only ten shillings.

但在半克朗的石头上，据我所知，这是目前（1773 年 2 月）的普遍价格，这样一张生皮目前只需十先令。