单词 | BB |
释义 | BB /bee"bee'/, n. 1. a size of shot, 0.18 in. (0.46 cm) in diameter, fired from an air rifle or BB gun. 2. Also called BB shot. shot of this size. [1870-75, Amer.] a quality rating for a corporate or municipal bond, lower than BBB and higher than B. |
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