benefition收益benefitn.利益；津贴；义演；保险金；借助vt.有益于；得益benefit cost ratio效益成本比率benefiting society用世benefit evaluation受益估测benefit bal-ance利益平衡benefit protection利益保护benefit motivation利益驱动benefit above cost超值效益benefit assignment利益分配benefit standpoint利益观benefit estimation效益评价