This is the 3556th most frequent Chinese word.
流域
"流域" (liúyù) means "river basin" or "drainage area."
In this sentence, "流域" refers to a geographical area drained by the Yellow River, highlighting its historical and cultural significance.
黄河流域是中国古代文明的发源地。
The Yellow River Basin is the cradle of ancient Chinese civilization.
Here, "流域" denotes the area surrounding the Yangtze River that shares common geographical and climatic characteristics.
长江流域的气候多样，有助于农业发展。
The Yangtze River Basin has a varied climate, conducive to agricultural development.
In this context, "流域" is used to describe a watershed area within ecological studies focusing on resource and environment management.