1.The Air Force says it has a serious need for new planes to refuel refuel aircraft in mid flat mid-flight .
空军说他们急需一批新的加油机给中途飞行空中加油。
2.The Air Force says it has a serious needs for new plans to refuel aircraft in mid-flight .
而空军认为他们非常需要新的飞机来给飞在半途的飞机来加油。
3.The Air Force says it has a series serious need for new planes to refuel aircraft in mid-flight .
空军说这是飞行中途需要新的补给燃料飞机的紧急需求。
4.The a Air f Force says it has a serious need for new planes to refill refuel aircraft in mid-flight .
空军说他非常需要一种新型飞机，以提供飞机飞行中途加油。