Drone-flyers are breaching both no-fly zones and restricted airspace around airports with increasing frequency.

无人机驾驶员们既违反禁飞区规定，也违反机场附近的限制飞行规定，而且违规事件越来越频繁。

Unidentified aircraft, you are in restricted US military airspace.

不明身份的飞机 你现位于美军管制空域。

This might be to better communicate with other towers, or perhaps required if entering restricted airspace.

这可能是为了更好地与其他塔进行通信，或者在进入受限空域时可能需要。

Similarly to the restricted airspace, however, these are designated on aeronautical charts by the letter P followed by a dash and a number.

然而，与限制空域类似，这些空域在航空海图上用字母 P 表示，后跟破折号和数字。