yǒu yīcì ， tā pángbiān zuò zhe yígè lǎoyéyé ， shǒulǐ ná zhe liǎngdài cài ， wèn tā yào zěnme huànchéng dàoshì yīyuàn 。

有一次，她旁边坐着一个老爷爷，手里拿着两袋菜，问她要怎么换乘到市医院。

Once an old man sat beside her holding two bags of vegetables, asking how to transfer to the city hospital.