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burn up 消耗
burst in 闯进、闯入
burst into flames 突然着火
burst into tears/laughter 突然放声大哭/笑
burst out doing 爆发;突然
business sense 商业理念
by and by 不久以后、很快的
by chance 偶然
by degrees 逐渐地
by far 至今为止
by means of 通过……的办法
by occasionally 偶然的
by ones and twos 三三两两地、零零落落地
by oneself 独自地、独立地、单独地
by the end 在……以前
by the hour/day/week/minute/month/year 按小时/日/周/分/月/年算
by the kilogramme/ton 按公斤/吨算
by the time 一段时间前(引导时间状语从句)
by the way 顺便说一下
by this means 用这种方法
by weight/length/volume 按重量/长度/容量算
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