究竟什么东西可以称为有活性呢？最为常见的与“活性”有关的物质，也许可视为是吸附能力很强、可用来过滤气体、吸附毒素、细菌的“活性炭”。显然，“活性”食品并不具备这种功能，且意不在此。据说，在废水处理中有“活性污泥”一词，就是用充满微生物的污泥与废水结合，吸 What can be called active? The most common “active” substances may be considered “activated carbons” that are highly adsorptive and can be used to filter gases, adsorb toxins, and bacteria. Obviously, “active” foods do not have this function, and this is not intended. It is said that in wastewater treatment there is “activated sludge” is the word, is full of microorganisms in the sludge and waste water combined with suction