連續彎道：S-bend

S-bend
noun [C usually singular]
a bend in a road which is in the shape of the letter S.

頭文字D--髮夾彎: hairpin bend (UK)/ turn (US)

hairpin bend (US hairpin turn)
a bend in the road which curves so sharply that it almost turns back to go in the opposite direction.

an honest mistake--不小心的錯誤

An honest mistake means an innocent mistake which was made despite the presence of procedures to prevent the making of such mistakes. It is a mistake that occurs despite reasonable care to prevent it. A mistake which is the result of negligence or inattention or indifference is not an honest mistake.