61.bid sb sth =bid sth to sb 向某人问候…
62.at birth 在出生时

63.by birth在出生上,论出身,按血统

64.give birth to出生

65.be to blame for 应负责任

66.blame sth on sb = blame sb for sth把…归咎于某人
67.blaze with sth ①燃烧;②闪耀着;③激发…
68.in blossom  开花(指树木)

69.be in blossom  开花(强调状态)

70.come into blossom  开花(强调动作)

71.blow away  刮走,吹走
72.blow down （风）吹倒

73.blow off①吹掉;②将热水、蒸气等放掉
74.blow over  （风）吹翻、刮翻　

75.boast of/about   吹嘘

76.boil over  发怒、激动
77.book up订完了

78.be bound to 注定

79.bound for 开往