n. 1.〔美国〕斜壁峡谷；低地；(时干时流的)深山沟(山溪)。 2.【地质学；地理学】熔岩流；(熔岩)岩席。
Example Sentences:
1.
In the northern tract of the scablands , the water cut backward into the rock and caived the grand coulee , a gorge twice as high as niagara ' s and several times wider 在疤地的北部，洪水回切人岩石，削刻出大峡谷，有尼亚加拉的两倍高，好几倍宽。
