tā / jí xìng / tián / le / yī què / xiǎo lìng / sòng gěi / péng yǒu / zuò wéi / shēng rì / lǐ wù

他即兴填了一阕小令，送给朋友作为生日礼物。

He improvised a short lyric poem and gave it to his friend as a birthday gift.