In elny in usa 15% of the chalcocite was oxidized in one year down to 15m depth . 在美国埃尔尼，一年中有15%的辉铜矿被氧化至15米的深处。
2.
In elny in usa 15 % of the chalcocite was oxidized in one year down to 15m depth 在美国埃尔尼，一年中有15 %的辉铜矿被氧化至15米的深处。
3.
The el nino phenomenon that brews up in the southern pacific every three to five years is showing signs of turning the world ' s weather upside down again 每隔三五年在南太平洋形成的埃尔尼诺现象正显示出又一次要把世界气候颠倒的迹象。
