noun · The amount of digital data transmitted over a network, including website traffic and mobile data usage.

我的手机套餐每月包含10GB的流量。

noun · The throughput of people, vehicles, or passengers moving through a specific area or transportation system.

春节期间，火车站的人流量达到高峰。

noun · The volume of fluid or gas passing through a specific point per unit of time, or hydrological discharge.

工程师正在测量管道内部的水流量。