gōng / chéng / shī / tōng / guò / nì / xiàng / gōng / chéng / fēn / xī / le / zhè / kuǎn / ruǎn / jiàn / de / gōng / zuò / yuán / lǐ工程师通过逆向工程分析了这款软件的工作原理。The engineers used reverse engineering to analyze how the software works.