n.[C]

1. 雄蜂
2. 懒人，游手好闲者；寄生虫
3. 无人驾驶飞机（或艇等）；无人机
   a drone bomber

   无人驾驶轰炸机

   The drone can gimbal up 90 degrees.

   这架无人机可以九十度垂直上升。

vi.

1. 混日子

vi.

1. 嗡嗡叫，嗡嗡响
   A plane droned overhead.

   飞机在上空嗡嗡飞过。

2. 低沉单调地说
   She always drones on about her problems.

   她老是嘀咕自己的种种困难。

vt.

1. 低沉单调地说
   The minister droned out the psalm.

   牧师喃喃地念赞美诗。

n.

1. 嗡嗡声；低沉单调的声音[U]
   the drone of distant traffic

   远处车辆的嗡嗡声

2. 【音】风笛的单音管[C]；风笛声[U]
3. 【音】持续音，低音部[U]

v.

▸speak tediously and at length:

Jim droned on for an hour.

n.

1. a low continuous humming sound.
   ▸a pipe (especially in a set of bagpipes) or string used to sound a continuous note of low pitch.
2. a male bee which does no work in a colony but can fertilize a queen.
   ▸an idle person.
3. a remote-controlled pilotless aircraft.