regulate expenditure

例句：

1. 4.
   在经济上
2. 1. The government needs to regulate the amount of oil imported.
   政府需要调控进口石油的数量。
3. 2. The company is responsible for regulating the quality of its products.
   该公司负责监管其产品的质量。
4. 3. The regulation of the traffic flow is crucial for the safety of the city.
   交通流量的调控对于城市的安全至关重要。