| Front | 钻研 |
|---|---|
| Back | to study meticulously; to delve into |
Learn with these flashcards. Click next, previous, or up to navigate to more flashcards for this subject.
Next card: 钻石 diamond
Previous card: 钻空子 lit drill hole advantage loophole exploit seize
Up to card list: HSK 7-9 Combined By: chinesezerotohero