tā / zài / jiē / shàng / màn / wú / mù / dì / de / zǒu / le / hěn / jiǔ / yě / bù / zhī / dào / yào / qù / nǎr

他在街上漫无目的地走了很久，也不知道要去哪儿。

He wandered aimlessly through the streets for a long time, not knowing where to go.