riverbed [ˈrɪvɚˌbɛd]

例句:

• The riverbed is silted up , so there's no outlet for the floodwater.
  河道淤塞, 水无出路.
  来自《现代汉英综合大词典》
• The pipe is buried just below the Yellowstone riverbed.
  来自VOA
• The riverbed was strewn with big boulders.
  河床上散布着很多大圆石。
  
• Its main bridge - a huge concrete structure - now lies concertina ed on the riverbed.
  钢筋混凝土结构的主要桥梁,被扭扁坍塌在河床.
  
• Down on the riverbed, long weeds swayed like green hair.
  来自THETIMES
• I want to create a canal or riverbed for capital flow.
  来自NEWYORKER