a power of

例句：

1. 1. The company has a power of attorney for the CEO.
   这家公司为首席执行官设立了代理权。
2. 2.The government has a power of veto over legislation.
   政府对立法拥有否决权。
3. 3.The president has a power of life and death over the country.
   总统对国家拥有生死大权。