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| 单词 | BB |
| 释义 | BB 1 (bēbē)n. A pellet or ball, usually of steel coated with copper or nickel, that measures 7/40 of an inch (0.44 centimeter) in diameter, used in air rifles. [From BB, a size of birdshot pellet intermediate between B and BBB that measures 17100 of an inch (0.43 centimeter) in diameter (from the fact that BB guns originally fired birdshot pellets of this size).] |
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