entrenched valley

常见例句

双语例句

• The formation of entrenched valley is the mutual effect of tectonic movement and sea (lake) level.
  下切谷的形成是构造运动和海（或湖）平面共同作用的结果。

原声例句

• Nearly two weeks after Pakistani security forces began attacking Taliban positions in the northwest Malakand region, the army says troops are now focusing on the estimated 4,000 core fighters entrenched in the militant stronghold Swat valley.
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