cost of converted ton-kilometer

例句：

1. 1.The process of converting iron to steel is known as the blast furnace process.
   将铁转化为钢的过程被称为高炉炼铁过程。
2. 2.The converted house has a modern design with high-tech features.
   改造后的房子具有现代设计，带有高科技特点。
3. 3.The converted car has been refurbished and now runs smoothly.
   改装后的汽车经过翻新，现在运行顺畅。