HSK 7-9
颠簸
diānbǒ动
to be jolted around (car on a bumpy road, boat on a rough sea, aircraft experiencing turbulence); (fig.) to undergo a rough experience
山路颠簸让乘客很不舒服。
Shān lù diān bǒ ràng chéng kè hěn bù shū fu.
The bumpy mountain road made the passengers uncomfortable.
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Appears across levels (7-9) in the HSK 3.0 word list.