The roads twist around hairpin bends.

那些道路有很多险弯。

《柯林斯英汉双解大词典》

The road is a succession of hairpin bends, hills, and blind corners.

这条路上急转弯、坡道和死拐角一个接一个。

youdao

The road is particularly challenging to drive due to the presence of 48 hairpin bends, with the road becoming exceedingly narrow at some points, and some very steep inclines.

山路的48处险弯和有些地段的极度狭窄以及陡坡，对驾驶者充满挑战。

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The coach crashed as it travelled down a steep mountain road, which features 21 hairpin bends.

BBC: Scene of French Alps coach crash

It crashed as it travelled down a steep mountain road, which features 21 hairpin bends, 65km from Grenoble.

BBC: UK

But the Geiranger-Trollstigen Route offers 106km of raw Norwegian nature, with an awe-inspiring collection of hairpin bends, glaciated valleys and emerald green fjords running north to south.

BBC: Driving Norway��s Golden Route