而追踪一颗宝石的原产地是件很难的事情，因此，为了避免负面宣传的风险，戴比尔斯决定只营销那些自己公司挖出来的钻石。

Tracing a gem's provenance is hard. So, to avoid the risk of bad publicity, DE Beers decided to market only those it dug up itself.

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珠瓦纳(原意是产小石头的地方)的钻石矿是在1972年被戴比尔斯的采矿者发现的。

Jwaneng, which means "a place of small stones", was discovered by De Beers' prospectors in 1972.

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更加激烈的竞争意味着戴比尔斯可能不能够再以它过去的方式来控制价格了：即当市场疲软时它购进钻石而当市场需求旺盛时它卖出钻石。

More competition means De Beers can no longer control prices the way it used to: by buying diamonds when markets are weak and selling when they strengthen.

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