A worker sorts diamonds in Botswana.

一个工人在波扎那分类钻石。

youdao

Last year De Beers produced 51m carats from its mines in Botswana, Namibia, South Africa and Tanzania, which amounted to 40% of the world's diamonds by value.

去年戴比尔斯在伯茨瓦纳,纳米比亚,南非和坦桑利亚的钻矿产量为51百万克拉，占世界钻石总产值的40%。

youdao

Last year De Beers produced 51m carats from its mines in Botswana, Namibia, South Africa and Tanzania, which amounted to 40% of the world's diamonds by value.

去年戴比尔斯在伯茨瓦纳,纳米比亚,南非和坦桑利亚的钻矿产量为51百万克拉，占世界钻石总产值的40%。

youdao