heavy fuel burning engine

例句：

1. 1. The new heavy-duty truck has been tested extensively before being put into use.
   这辆新型重型卡车在投入使用前经过了广泛的测试。
2. 2. Heavy-duty engines are often used in construction machinery for their durability and efficiency.
   重型发动机常用于建筑机械中，因为它们的耐用性和效率。
3. 3. The heavy-duty engine is designed to withstand high loads and operate efficiently under extreme conditions.
   这种重型发动机设计用来承受高负载并在极端条件下高效运行。