nà / duàn / gǎn / qíng / ràng / tā / hún / qiān / mèng / yíng / zhì / jīn / nán / yǐ / wàng / huái

那段感情让他魂牵梦萦，至今难以忘怀。

That relationship has stayed on his mind, and he still cannot forget it.