今天上午空闲了下，就随便翻译了一篇文章，翻译不好清指教

Barely more than a week after returning the F-15 Eagle fleet to flight the Air Force is once again grounding most of the planes, Military.com has learned.

根据military.com的了解,不到一星期，空军是再次停飞大部分的F-15战斗机。

F-15 models A through D -- a total of 442 planes -- were ordered grounded by Air Combat Command,Langley Air Force Base, Va., late on Nov. 27, ACC spokesman Maj. Thomas Crosson said in an interview.
f – 15战斗机分为a-d 型，一共有4 42架飞机被空军作战指挥勒令停飞，11月27日晚弗吉尼亚州兰利空军基地，发言人少校Maj. Thomas Crosson在接受采访时说。

The latest problem is with cracks in the planes' metal support beams, called longerons, that run the length of the aircraft, and make up the sill on which the canopy sits, Crosson told Military.com.
crosson告诉military.com的记者，出现的最新问题是由于支持飞机结构的材料，如果经过长时间的飞行，会造成金属疲劳，而产生破裂。

The entire F-15 fleet was ordered grounded in early November after the break up and crash of a Missouri Air National Guard Eagle.
11月上旬,Missouri国民警卫的一架f-15失事后,就提出了整个F-15战斗队全部停飞的消息。

The Air Force began lifting the restrictions on the fleet Nov. 19 - starting with F-15E Strike Eagles - following aggressive inspections of the planes.
不过11月19日空军开始解除限制F-15E停飞的限制.

ACC called for the new groundings after metallurgical analysis of the planes suggested there could be possible cracking problems with the longerons.
经过过所谓ACC—一种新的材质监测手段，冶金分析飞机师得出结论，飞机的longerons也有可能开裂问题。

Officials now are working at Warner Robins Air Force Base, Ga., to develop an inspection list that will be sent out to F-15 maintainers across the Air Force
在乔治亚州华纳罗宾斯空军基地，政府正在忙碌,以制定一项检查清单，将被送到全国的装备了f – 15的空军基地以便对所有的F-15进行检查。
 
Crosson said the list should be completed in a day or two, and will include a timeframe for how long the actual inspections should take.
crosson说，清单应该在最近一两天出来，其中将包括多长时间就应该作一次检查。

He could not say how long it would before the latest restrictions would be lifted from the entire fleet.
不过他没有明确的说明这次禁飞限制多长的时间内会解除禁令。
原文地址（英文）：http://www.military.com/NewsContent/0,13319,157157,00.html