Wǒmen shì duōnián de lǎopéngyou le.
We've been old friends for many years.
Tā zài zhè jiā gōngsī gōngzuò le duōnián.
He has worked at this company for many years.
Duōnián yǐhòu, tā zhōngyú huídào le jiāxiāng.
After many years, he finally returned to his hometown.
