The hydrologist figured the water depth along a wharf piling. 水文工作者在码头桩上用数字标明水深。
They called in a hydrologist. 他们聘请了一位水文学家。
Matthew McCartney is a hydrologist at the International Water Management Institute in Addis Ababa, Ethiopia. MatthewMcCartney是埃塞俄比亚亚的斯亚贝巴的国际水管理研究所的水文学家。
Six miracles within five years: an introduction of Li guo'an, a hydrologist and regimental commander of the Hydrologic Engineering regiment, beijing military area 五年六次创奇迹&记北京军区给水工程团团长、水利专家李国安