aircraft structures

例句：

1. 1. The aircraft structure is designed to withstand extreme weather conditions.
   飞机结构设计用来承受极端天气条件。
2. 2. The new aircraft structure has improved efficiency and reduced fuel consumption.
   新的飞机结构提高了效率并减少了燃油消耗。
3. 3. The construction of the aircraft structure was completed ahead of schedule.
   飞机结构的建设提前完成。