2 sentences for 人流 (rén​liú — stream of people)

1. 商场门口的人流非常大，走路都很困难。

   shāng​chǎng mén​kǒu de rén​liú fēi​cháng dà, zǒu​lù dōu hěn kùn​nan.

   The flow of people at the mall entrance is very heavy, making it difficult to walk.

   Source: Dong Chinese Dictionary

2. 那种流动的摊位非常灵活，能根据人流调整位置。

   nà zhǒng liú​dòng de tān​wèi fēi​cháng líng​huó, néng gēn​jù rén​liú tiáo​zhěng wèi​zhi.

   Those mobile stalls are very flexible and can adjust their location based on the flow of people.

   Source: Dong Chinese Dictionary