HSK 7-9
崎岖
qíqū形
rugged; craggy
车辆缓慢驶过崎岖山路。
Chēliàng huǎnmàn shǐguò qíqū shānlù.
The vehicle moved slowly along the rugged mountain road.
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Also free:
Appears across levels (7-9) in the HSK 3.0 word list.