expert at sth. 
in etwas bewandert sein. 
essere abile in qcs. 
être expert en qqch. 
ser experto en algo expert at sth. 24 在行 [-] zàiháng (in-profession) expert at sth.: 样样~ expert at everything || 她对计算机很~. She knows a lot about computers. || 回答很~ answer questions very professionally '| Goethebuch | Vietnamese |
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| Oxford3000Ten |
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| GLOSSIKA |
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