highway trust fund

例句：

1. 1. The highway trust fund is responsible for funding the construction and maintenance of highways.
   高速公路信托基金负责资助高速公路的建设和维护。
2. 2.The highway trust fund provides funding for research and development in transportation technology.
   高速公路信托基金为交通技术的研究和发展提供资金。
3. 3.The highway trust fund has been criticized for its lack of transparency and accountability.
   高速公路信托基金因其缺乏透明度和问责制而受到批评。