invest vt. 投资The state has planned to invest two millions in the dam.国家计划投资两百万元修建这个大坝。【拓展词汇】pension n.养老金，抚恤金
disability insurance伤残保险
survivor benefits遗属津贴(援助那些劳动力死亡的家庭)
unemployment benefits/compensation 事业保险
defined benefit plan养老金的固定受益计划
