hum

• 名词，指低沉、连续而平稳的声音，常由机器、昆虫发出，或由人闭唇哼唱产生。

A noun referring to a low, continuous, and steady sound, often produced by a machine, insect, or a person singing with closed lips.

1. Low continuous soundA2formal

   A low, steady, continuous sound, often made by machines, insects, or people.

   嗡嗡声

   • The hum of the refrigerator kept him awake.
   • She could hear the hum of bees in the garden.
   • The room was filled with the quiet hum of conversation.

   同义词buzzdronemurmurpurrwhir

   反义词quietsilencestillness

2. Activity or busynessB2informal

   A state of busy activity or lively movement.

   喧闹繁忙

   • The hum of the city never stops.
   • The office was in a constant hum of activity.
   • He enjoyed the hum of the busy marketplace.

   同义词activitybustlebuzzcommotionhustlelivelinessstir

   反义词inactivitystagnationstillness

• 指发出低沉、连续、类似嗡嗡的声音，常为闭着嘴唇哼唱；也可指处于活跃忙碌的状态。

A verb used to indicate the act of making a low, continuous, buzzing sound, often with the lips closed, or to be in a state of busy activity.

1. Make a low soundA2formal

   To make a low, continuous, droning sound with the lips closed.

   哼

   • She hummed a tune while cooking dinner.
   • The bees hummed around the flowers.
   • He hummed softly to himself as he worked.

   同义词buzzdronemurmurthrumwhir

2. Be active or busyB2informal

   To be full of activity or busy noise.

   热闹

   • The office was humming with activity before the deadline.
   • The city hums with energy at night.
   • The factory hummed as workers completed their shifts.

   同义词bustlebuzzswarmteemvibrate

3. Emit a low soundB1formal

   To produce a low, steady sound like a machine or engine.

   发出低沉的声音

   • The refrigerator hums quietly in the corner.
   • The engine hummed as the car idled.
   • The computer fan hummed softly.

   同义词buzzdronemurmurpurrwhirr