He said that it was necessary to learn from past mistakes and avoid solutions that would create future problems, such as the promotion of HCFCs in efforts to phase out CFCs.
他说，有必须从过去的错误中吸取教训并避免可能导致更多问题的解决方案，例如为了淘汰氟氯化碳而推广氟氯烃化合物。