hairpin turn
US /ˈher.pɪn ˌtɜːrn/
UK /ˈher.pɪn ˌtɜːrn/

1.
发夹弯, 急转弯
a very sharp bend in a road, especially on a mountain, that doubles back on itself
:
•
The bus struggled to navigate the steep hairpin turn on the mountain road.
公共汽车在山路上艰难地通过陡峭的发夹弯。
•
Drivers must slow down significantly before a hairpin turn.
司机在发夹弯前必须大幅减速。