Letseng is one of the most productive mines in history — four of the world's 20 largest rough diamonds have been found at the mine, including the three largest found this century.

莱特森矿是历史上产量最高的钻石矿之一。目前全球20颗最大的原钻中有四颗产自这里，其中有三颗发现于本世纪。

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Needless to say, the farm the first farmer had sold, so that he could search for a diamond mine, turned out to be the most productive diamond mine on the entire African continent.

不必说，第一个农民为了搜寻钻矿而卖掉的农场结果却是整个非洲大陆上最多产的钻矿。

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Mine hoist is the throat and life lines of mine. That its performance is safety or not will not only effect the productive efficiency but also bring some serious societal impact.

矿井提升机是矿山的咽喉和命脉，它的性能安全与否，不但直接影响生产效率，而且还会带来一些重大的社会影响。

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Motsepe's first sizable contract: Sweeping a marginally productive mine in the town of Orkney, owned by a division of 90-year-old mining behemoth Anglo American.

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Famed mines in Golconda and Panna produced coveted stones including the famous Hope and Koh-i-Noor for hundreds of years, but a century has passed since the country had a productive mine.

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Motsepe's first sizable contract: Sweeping a marginally productive mine in the town of Orkney, owned by a division of 90-year-old mining behemoth Anglo American (nasdaq: AAUK - news - people ).

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