n. 盖特威克（伦敦第二大机场）
1.GATWICK were trialpng a drone detection system, but it could only track one brand of drone, and it couldn't detect the drone that was actually flown.
盖特威克正在测试一套无人机探测系统 但它只能追踪一种品牌的无人机 而且无法侦测正在飞行的无人机
