economic arteries

例句：

1. 1. The economic arteries of the country are vital for its growth.
   该国的经济动脉对其增长至关重要。
2. 2. The government's economic policies have a direct impact on the economy's arteries.
   政府的经济发展政策直接影响到经济的动脉。
3. 3. The economic arteries of the city were severely damaged in the recent flood.
   城市的经济动脉在最近的洪水中受到了严重破坏。