The global airline market was disrupted by the September 11, 2001, attacks and increased petroleum prices, making airlines more interested in efficiency than speed.
But after the September 11, 2001 attacks fuel prices went up, so airlines wanted more efficient planes rather than faster ones.
But after the September 11, 2001 attacks fuel prices went up, so airlines wanted more efficient planes rather than faster ones.
简化: The global airline market was disrupted by the September 11, 2001, attacks and increased petroleum prices, making airlines more interested in efficiency than speed. 输出: