internal loss

例句：

1. 1. The company suffered a significant internal loss due to the economic downturn.
   由于经济衰退，公司遭受了重大的内部损失。
2. 2. The project's internal loss was calculated based on the cost of materials and labor.
   该项目的内部损失是根据材料和劳动力的成本计算的。
3. 3. The company is looking into ways to reduce its internal loss and improve efficiency.
   该公司正在寻找减少内部损失并提高效率的方法。