HSK 7-9
攻克
gōngkè动
to capture; to take; to overcome; to solve
团队终于攻克了技术难关。
Tuán duì zhōng yú gōng kè le jì shù nán guān.
The team finally overcame the technical challenge.
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Appears across levels (7-9) in the HSK 3.0 word list.