Heavy metals cannot be broken down by microorganisms, but they can be washed out with acids. But soil is alive, so the problem arises of bringing it back to life after washing. This remains a blind spot badly in need of a breakthrough.
重金屬不怕微生物分解，卻怕酸性水溶液淋洗，但土壤是有生命的，洗過的土是否能真正「復活」，是需要突破的盲點。