two-level energy system

例句：

1. 1. The two-level energysystem is designed to reduce energy consumption andincrease efficiency.
   两级能源系统旨在减少能源消耗并提高效率。
2. 2. The new two-levelenergy system has greatly improved the efficiency ofour factory.
   新的两级能源系统大大提高了我们工厂的效率。
3. 3. The two-level energy systemis a promising solution for reducing carbon emissions.
   两级能源系统是减少碳排放的有前景的解决方案。