zhè / tái / jiǎn / sù / jī / lǐ / de / wō / gǎn / yǐ / jīng / yán / zhòng / mó / sǔn / xū / yào / gēng / huàn

这台减速机里的蜗杆已经严重磨损，需要更换。

The worm in this gearbox is badly worn and needs to be replaced.