What you find is roads that haven't been maintained in years - in which case they're impassable and Sri Lanka is a classic case in point.

你可以看到多年没有维修的道路—有些已经无法通行了，斯里兰卡就是一个典型的例子。

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Just one bomb on a German bridge over the Meuse, or one impassable traffic jam in the Ardennes forest could have meant the difference between victory and defeat.

其实只有有一枚炸弹落在德国默兹河的桥梁上，或阿登尼斯森林里一段不可逾越的交通堵塞，就可能意味着德国人进攻的失败。

youdao

A piece of impassable bog with yield of liquid peat.

一个不可逾越的泥沼区。

youdao

Iran has strengthened security along a border already crawling with soldiers and paralleled by immense trenches, impassable even by a self-navigating camel with a bellyful of drugs.

ECONOMIST: Drugs, Iran and Afghanistan: What the Taliban banned | The

The driveway looked practically impassable, even for a 4 x 4.

NEWYORKER: The Kingpins

The ocean drive on the bluff, which has for years been the pride of Long Branch, is each year becoming narrower, and within a short time will be impassable.

FORBES: New Jersey vs. The Ocean, Then And Now