71. begin with 以…开始。to begin with (=first of all) 首先，第一(经常用于开始语)
72. on behalf of (=as the representative of)以…名义
73. believe in(=have faith or trust in; consider sth.sb. to be true)相信，依赖，信仰。
74. benefit (from) 受益，得到好处。
75. for the benefit of 为了…的利益(好处)
76. for the better 好转
77. get the better of (=defeat sb.)打败，胜过。
78. by birth 在出生上，论出身，按血统at birth 在出生时;give birth to出生
79. blame sb. for sth. 因…责备某人. blame sth. on sb. 把…推在某人身上
80. in blossom开花(指树木)be in blossom开花(强调状态)come into blossom开花(强调动作)
