lǎo / rén / bào / zhe / gāng / mǎn / yuè / de / chóng / sūn / xiào / de / hé / bù / lǒng / zuǐ

老人抱着刚满月的重孙，笑得合不拢嘴。

The old man smiled from ear to ear while holding his one-month-old great-grandson.