yé / ye / nián / qīng / shí / zài / gōng / chǎng / zuò / gōng / hòu / lái / xué / huì / le / xiū / lǐ / jī / qì

爷爷年轻时在工厂作工，后来学会了修理机器。

When he was young, Grandpa did manual work in a factory and later learned to repair machines.