hairpin turn, hairpin bend, hairpin corner. 髮夾彎

Hairpin turn - Wikipedia, the free encyclopedia
https://en.wikipedia.org/wiki/Hairpin_turn

Is David Hockney the greatest living British painter just by default? | Art and design | The Guardian
https://www.theguardian.com/artanddesign/jonathanjonesblog/2014/feb/03/david-hockney-greatest-living-british-painter-tate-britain

Hairpin turn - Simple English Wikipedia, the free encyclopedia

A hairpin turn (also hairpin bend, hairpin corner, etc.)

Hairpin turn - Wikipedia, the free encyclopedia

髮夾彎