tortuously

adverb
1
in a long, complicated way that is difficult to understand; to a degree that is difficult to bear
به طور پیچیده, به طور پرپیچ و خم, به دشواری
2
with a lot of bends
به طور پیچ و تاب‌دار, به طرز پر پیچ و خم, به طور مارپیچ
The road twists tortuously through the scenic coastal mountain range.