river
单词辨析：
〔辨析〕
普通用词，泛指大大小小的河流。
〔例证〕
Have you ever been to the Mississippi River?
你去过密西西比河吗？
They used to go for a walk after supper along the river.
他们过去常常在晚饭后沿着河边散步。
〔辨析〕
一般指流经平坦陆地的小河或小溪流。
〔例证〕
There is a stream running across the meadow.
草地上有一条小溪流过。
相关例句：
The topography of the river's basin has changed significantly since the floods.
该河流域的地形自洪水以来发生了显著变化。
The waters of the Yangtze River are dangerously high for the time of year.
长江的水位每年这个时候都处于危险的高位。
The boundary between Shanxi and Shaanxi is the Huanghe River.
山西和陕西以黄河为界。
Explorers traced the Nile River to its several headstreams in Central Africa.
探险者在中非找到了尼罗河的几处源头。
He crossed the river by the aid of a tree.
他借助于一棵树过了河。
The level of pollution in the river was falling.
这条河中的污染物水平在下降。