单词	今昔之感
释义	今昔之感 jīnxīzhīgǎnfeelings of nostalgia
随便看	mathematical genetics mathematical geodesy mathematical geography mathematical geology mathematical graph mathematical horizon mathematical induction mathematical instrument mathematical linguistics mathematical lofting mathematical logic mathematically mathematical manipulation mathematical mean mathematical model mathematical modeling mathematical model of excitation system mathematical model of load mathematical model of power system mathematical model of synchronous machine mathematical morphology mathematical notation mathematical olympiad mathematical operations computer mathematical operations computer，moc