HSK 7-9
破解
pòjiě动
to break (a bond, constraint etc); to explain; to unravel; to decipher
团队终于破解了技术难题。
Tuánduì zhōngyú pòjiě le jìshùnántí.
The team finally solved the technical problem.
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Appears across levels (7-9) in the HSK 3.0 word list.