hydrologist

例句：

1. 1. He is a hydrologistwho specializes in studying the behavior ofwater in rivers and streams.
   他是一名专门研究河流和溪流中水的行为的水文学家。
2. 2. Thehydrologist used datafrom satellites to predict floods in the region.
   这位水文学家利用卫星数据预测该地区的洪水。
3. 3.The hydrologist was called upon tohelp with the emergency response efforts following thehurricane.
   在飓风紧急响应工作中，这位水文学家被召来帮忙。