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。
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。
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。
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