1.  master
2.  proficient in
3.  skillful at
4.  excel in

• 1. 精通: proficient | be well up in | proficiency | be proficient in
• 2. 精通的: proficient | versed | conversant
• 3. 精通某门学问的: learned

更多释义

• 1.她不仅会说西班牙语，还精通计算机。
  Not only does she speak Spanish, she's also good with computers.
  dict.yoduao.com
• 2.大量埃及人精通外语。
  A great number of Egyptians are proficient in foreign languages.
  dict.yoduao.com
• 3.她精通好几种语言。
  She's proficient in several languages.
  dict.yoduao.com

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