huí / shǒu / wǎng / shì / wǒ / bù / jīn / gǎn / tàn / sì / shuǐ / nián / huá / yǐ / jīng / qiǎo / rán / yuǎn / qù

回首往事，我不禁感叹似水年华已经悄然远去。

Looking back on the past, I cannot help but sigh that those fleeting years have quietly passed.