Any design problem, if one is found, is also likely to be specific to this particular engine model, which is still relatively new and is in use on only 20 aircraft so far.

任何设计问题，即便发现一处，也可能仅限于此型号引擎，不会拓展开来，迄今为止有20架飞机使用此引擎。

youdao

Games in any one of four aircraft flying squadrons are the order of finish as a victory standard.

游戏中以任何一个飞行中队四架飞机都到达终点的先后次序作为获胜的标准。

youdao

The UK and France have also agreed to keep at least one aircraft carrier at sea between them at any one time.

BBC: Cameron and Sarkozy hail UK-France defence treaties

The aircraft appeared to have hit at least one tree, but not any buildings directly.

CNN: 1 killed after plane crashes in Los Angeles neighborhood

The defence ministry says that to sustain a long-term operation, with a proper rotation system, it ideally likes to have at its disposal three or four ships or aircraft, and up to five army units, for every one deployed at any given time.

ECONOMIST: The army