We do not, however, upon this account, imagine that those coarse metals are likely to multiply beyond the demand, or to become gradually cheaper and cheaper.

然而，我们并不因此而认为这些粗金属可能会成倍增长， 超出需求，或者变得越来越便宜。

The coarse metals, indeed, though harder, are put to much harder uses, and, as they are of less value, less care is employed in their preservation.

事实上，粗金属虽然更硬，但用途却更艰巨，而且由于它们的价值较低，因此在保存它们时也不太注意。

This diminution of price has, in the course of the present and preceding century, been most remarkable in those manufactures of which the materials are the coarser metals.

在本世纪和上个世纪的过程中，这种价格下降在那些材料是较粗金属的制造业中最为显着。

The weighing of gold, in particular, is an operation of some nicety In the coarser metals, indeed, where a small error would be of little consequence, less accuracy would, no doubt, be necessary.

黄金的称重尤其需要精密操作， 对于较粗糙的金属， 确实，一个小的误差不会造成什么后果， 毫无疑问，准确性会降低。

There are perhaps no manufactures, in which the division of labour can be carried further, or in which the machinery employed admits of' a greater variety of improvements, than those of which the materials are the coarser metals.

或许没有哪一种制造业能比那些以较粗金属为材料的制造业更进一步地进行劳动分工，或者所使用的机器允许进行更多种类的改进。