HSK 7-9
攻读
gōngdú动
to major (in a field); to study a specialty to obtain a higher degree
他白天工作夜里攻读法律硕士。
Tā bái tiān gōng zuò yè lǐ gōng dú fǎ lǜ shuò shì.
He works by day and studies for a master's degree in law at night.
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Appears across levels (7-9) in the HSK 3.0 word list.