Tweaking the airframes, such as the potential upgrade to Airbus's A320 short-haul jets with composite wings that can carry larger, more efficient engines, may help—but only a bit.

调整机身，例如可能升级空客 A320 短途喷气式飞机， 配备复合材料机翼， 可以搭载更大、更高效的发动机，可能会有所帮助——但作用不大。