It is technology, whether steel, gunpowder, radio, GPS, or nuclear weapons, which have defined conflicts over the eras.

无论钢铁、火药、无线电、全球定位系统还器，定义各个时代冲突的，正这些技术。

While Skinner's idea was feasible, none of the feathered fighter pilots ever saw  action, as the scientists ultimately went with a radio-based echolocation system instead.

虽然斯金纳的想法可行的，但没有一个有的战斗机飞行员看到过行动，因为科学家们最终选择了基于无线电的回声定位系统。