Turning to cost, I am not sure to which Merrill Lynch study you are referring, but it would be simplistic to compare seat-mile costs of narrow-body operation over U.S.
The 747-8 Intercontinental will have the lowest seat-mile cost of any large commercial jetliner, with 12 percent lower costs than its predecessor, the 747-400.
在所有大型商用喷气客机中，747 - 8洲际飞机会拥有最低的座位里程费用。
3
Unit revenue is revenue per available seatmile flown.