1.In the mean time, monopoly leads to failure of market. So, it become one of the reasons which causes government regulate economy.
垄断将导致市场失灵，从而成为政府采取规制手段干预经济的原因。
2.Public spenditure is one important policy instrument with which the government regulate economy, it is a reflection of government functions.
公共支出是政府调节经济运行重要的政策工具，是政府职能的体现。