tā / men / liǎng / gè / rén / xíng / yǐng / bù / lí / jīng / cháng / yì / qǐ / xué / xí / hé / chī / fàn

他们两个人形影不离，经常一起学习和吃饭。

The two of them are inseparable and often study and eat together.