In the course of alteration,the unstable elements in supergene zone are leached out in quantity,but the stable ones are relatively enriched.是什么意思_In the course of alteration,the unstable elements in supergene zone are leached out in quantity,but the stable ones are relatively enriched.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句