实用升限

This kind of fighter aircraft wingspan 7.15 meter, aircraft commander 15.4 meters, machine are high 4.13 meters, the service ceiling is 19,500 meters, the combat radius 270 kilometers, nimbly belongs to the tactical movement to be dexterous, climbs the speed quick fighter aircraft, at present the world still had surpasses 2,000 the Mig -21 fighter aircraft which served.

这种战斗机的翼展7.15米、机长15.4米、机高4.13米，实用升限为19500米，作战半径270公里，属于战术动作灵活轻巧，爬升速度较快的战斗机，目前全世界仍有超过2000架正在服役的米格-21战斗机。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。