The highly concentrated Ni2 + could be found in the man-made diamond wastewater that causes serious pollution to the environment, but is worthy of reuse.
人造金刚石生产废水中含有较高浓度的镍离子，对环境有严重的污染，但又具有一定的回收价值。
A man looks out over the Jwaneng diamond mine, a man-made canyon jammed with diamonds.
一个男子看着珠瓦纳的钻石矿区，这个人造峡谷堆着成堆的钻石。
A man looks out over the Jwaneng diamond mine, a man-made canyon jammed with diamonds.
一个男子看着珠瓦纳的钻石矿区，这个人造峡谷堆着成堆的钻石。
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