n.河床

The riverbed is often dry during the summer months.
在夏季的几个月里，河床经常是干涸的。
We had to ford the river where the riverbed was shallowest.
我们必须在河床最浅的地方涉水过河。
The riverbed has been altered by years of erosion.
多年的侵蚀改变了河床的形态。
Fishermen often find good spots along the riverbed for casting their lines.
钓鱼者常常能在河床边找到好位置来抛撒他们的钓线。
The river's flow has carved out a deep riverbed over centuries.
河流的冲刷经过数百年的时间在地下切割出了一条深深的河床。
Scientists study the riverbed to understand the history of the area.
科学家研究河床以了解该地区的历史。
The bridge was built over the widest part of the riverbed.
这座桥建在河床最宽的部分之上。
After heavy rains, the usually dry riverbed can turn into a raging torrent.
在大雨之后，通常干涸的河床可以变成汹涌的激流。
The sand and gravel in the riverbed provide a habitat for various aquatic life.
河床中的沙石为各种水生生物提供了栖息地。
The riverbed was lined with large boulders and smaller rocks.
河床布满了大石头和小石子。