B字开头的单词或词组
be equal tobureaubootstrapby thenbarrelbulgebotanicalbotherbuy intobelongbe connected withbearingbunchbanberylBOOLbindingblow upbullshitbeganblackboardbreak downBooleanblobbubbankruptby himselfbe immune tobe prone toby planebobbybasketbalance sheetbe sure thatbaggingbeverageboredomblanketbirthdaybreak upburgbounce
