margin of lift

例句：

1. 1. The city's economic growth has created new opportunities for businesses on its margins.
   城市的经济增长为其边缘地区的企业创造了新的机会。
2. 2. The researcher found that the increase in population had a marginal effect on the economy.
   研究人员发现，人口增加对经济有微小的影响。
3. 3.The company is considering expanding into new markets, but it's not clear if this will have a significant impact on their margins.
   公司正在考虑进入新的市场，但目前尚不清楚这是否会对其利润率产生重大影响。