hydrological

例句：

1. 1. The study of water is essential for understanding the Earth's climate system.
   研究水对于理解地球气候系统至关重要。
2. 2.The city has a network of rivers and streams that are crucial for its water supply.
   这个城市有一系列河流和溪流，对它的供水至关重要。
3. 3. The research team focused on studying the impact of climate change on the hydrological cycle.
   研究小组专注于研究气候变化对水文循环的影响。