每天十组表达，帮你日积月累应考，轻轻松松过关！ infrastructure 基础设施 infrastructure construction 基础设施建设 the collective sector of the economy 集体经济 planned economy 计划经济体制 expedite development 加快发展 downsize staffs and improve efficiency 减员增效 economical 节约的/经济的 economic ills 经济弊病 economic belts 经济带 a good momentum of economic growth 经济发展的良好势头