| 词组 | know a thing or two about | 
| 释义 | know a thing or two aboutv. phr.To be experienced in; have a fairly considerable knowledge of. 对…很有经验;对…见多识广。◆ Tom has dealt with many foreign traders; he knows a thing or two about stocks and bonds.汤姆与许多外商打过交道;他对股票和债券颇为熟悉。 | 
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