duō / nián / yǐ / hòu / huí / dào / gù / xiāng / xǔ / duō / wǎng / shì / dōu / yǐ / shì / guò / jìng / qiān

多年以后回到故乡，许多往事都已事过境迁。

When I returned to my hometown many years later, much of the past had become water under the bridge.