flow-rate fluctuation

例句：

1. 1.The flow rate of the river has increased significantly due to the construction project.
   由于建设项目，河流的流量显著增加。
2. 2.The fluctuation in the flow rate can affect the water quality of the lake.
   流量的波动会影响湖泊的水质量。
3. 3.The engineers monitored the flow rate fluctuations during the flood season.
   工程师们在洪水季节监测流量波动。