aircraft life cy cle cost

例句：

1. 1.The aircraft's life cycle cost is a critical factor in the decision-making process.
   飞机的生命周期成本是决策过程中的一个关键因素。
2. 2.The airline industry has been struggling to balance the cost of maintaining aircraft with the need for increased efficiency.
   航空公司一直在努力平衡维护飞机的成本与提高效率的需求。
3. 3. To reduce the aircraft life cycle cost, manufacturers are investing in more efficient engines and advanced materials.
   为了降低飞机生命周期成本，制造商正在投资更高效的发动机和先进的材料。