megafabWiktionary 原文构词拆分mega-前缀(originally) Very large, great. · In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by one million (106).+fab词根/词干词源说明mega- + fab释义（英文）名词 Noun(informal) A very large-scale manufacturing plant, especially one producing silicon chips.