Diamonds are useful as an industrial material as well as gem stones, and they would have many more applications if they could be made cheaply.

这是一个重要的问题。和宝石一样，作为工业原料的钻石很有用，而且如果他们价格便宜一些的话会有更多的用处。

youdao

Diamonds are useful as an industrial material as well as gem stones, and they would have many more applications if they could be made cheaply.

和宝石一样，作为工业原料的钻石很有用，而且如果他们价格便宜一些的话会有更多的用处。

youdao

Apart from low-quality industrial diamonds, the stones had no practical use that would help prop up their price.

ECONOMIST: THE DIAMOND BUSINESS

The historic environment includes historic buildings, ancient monuments (such as castles, abbeys, standing stones and industrial remains), shipwreck sites, archaeological sites, and historic parks, gardens and landscapes.

BBC: Communities, Equality and Local Government Committee