请把下面的汉语翻译成一句英文：
FAA允许业余爱好者操控无人机娱乐，只要他们遵守不得让无人机在他人头顶上飞行、将飞行高度保持在400英尺以下及视线范围之内的规定即可。
参考答案：
The FAA allows amateurs to fly drones for fun, as long as they stick to rules like not flying the machines over people and keeping their drones below 400 feet and in their line of sight.
drone 1 (drn)
n.
1. A male bee, especially a honeybee, that is characteristically stingless, performs no work, and produces no honey. Its only function is to mate with the queen bee.
2. An idle person who lives off others; a loafer.
3. A person who does tedious or menial work; a drudge: "undervalued drones who labored in obscurity" (Caroline Bates).
4. A pilotless aircraft operated by remote control.
