To utter a monotonous sound.

发出单调之音。

To speak in a drone.

以一成不变的语调说话。

To live in idleness.

游手好闲。

To move sluggishly.

蹒跚。

To read, sing or speak in a monotonous tone.

单调地吟诵；单地调说。

To pass or spend in idleness.

闲散虚度。

A dull, monotonous tone.

平板单调的声音。

One of the pipes of a bagpipe.

风笛的低音管。

The male of the honeybee, which produces no honey.

雄蜂。

A lazy fellow.

懒汉。

A pilotless airplane, helicopter, or ship controlled by radio signals.

(遥控的)无人飞机(直升机、船)。