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)
