It is impossible there should be such a trade as even that of a nailer in the remote and inland parts of the highlands of Scotland.

在苏格兰高偏远区，甚至不可能有像钉工这样行业。

A smith who has been accustomed to make nails, but whose sole or principal business has not been that of a nailer, can seldom, with his utmost diligence, make more than eight hundred or a thousand nails in a day.

一个习惯于做钉子铁匠，如唯一或主要业务不是做钉子，即使尽最大努力，也很少能在一天做超过八百或一千个钉子。