HSK 7-9
惊险
jīngxiǎn形
perilous; touch-and-go; nerve-racking; suspenseful
救援过程十分惊险曲折。
Jiù yuán guò chéng shí fēn jīng xiǎn qū zhé.
The rescue process was perilous and full of twists.
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Appears across levels (7-9) in the HSK 3.0 word list.