sth birrs
主语多为风扇、机器、车轮等能持续发出轻柔嗖嗖声的物体，通常不用于人。
The old projector birred as it warmed up.
那台旧投影仪预热时发出呼呼的声响。
发出轻柔的嗖嗖声
发出轻柔的嗖嗖声
make a soft swishing sound
一般现在时
The arrow birrs through the air.
箭嗖嗖地穿过空气。
一般过去时
The machine birred softly in the corner.
机器在角落里轻轻地发出呼呼声。
现在进行时
The bees are birring around the hive.
蜜蜂正在蜂箱周围嗡嗡地飞。
规则动词
The fan birred softly in the corner of the room.
风扇在房间角落里呼呼地响着。
用法提示：此处 birr 用作动词，表示发出轻柔的呼呼声。
As the car sped past, it birred loudly before fading away.
汽车疾驰而过时，发出呼呼声，然后渐渐远去。
用法提示：此处 birred 是 birr 的过去式，描述汽车快速移动时发出的声音。
The bees birred around the flowers, busy with their work.
蜜蜂在花朵周围嗡嗡作响，忙着工作。
用法提示：此处 birred 是 birr 的过去式，表示蜜蜂飞行时发出的持续嗡嗡声。
主语多为风扇、机器、车轮等能持续发出轻柔嗖嗖声的物体，通常不用于人。
The old projector birred as it warmed up.
那台旧投影仪预热时发出呼呼的声响。
常与 softly、loudly 等副词连用，说明声音的轻重。
The spinning wheel birred softly in the corner.
纺车在角落里轻轻地发出呼呼声。
进行时强调声音正在持续，多用于描写环境中的背景声响。
The fan was birring in the background all night.
风扇整夜在背景中呼呼作响。
grammar · medium
易错句子The fan birr softly beside the window.
正确表达The fan birrs softly beside the window.
主语 the fan 是第三人称单数，一般现在时的动词必须加 -s，写成 birrs；汉语动词没有人称和数的变化，学习者容易漏掉这个词尾。
grammar · medium
易错句子A breeze was biring through the curtains.
正确表达A breeze was birring through the curtains.
birr 是以重读闭音节结尾的动词（b-i-rr），加 -ing 时要双写末尾的 r，写成 birring；学习者常按“直接加 -ing”的规则写成 biring，造成拼写错误。
whir（也拼作 whirr）指机器、马达或翅膀发出低沉、连续而有节奏的嗡嗡声；birr 的声音更轻柔，像布料摩擦或空气掠过的嗖嗖声，不带机械的持续低鸣。
burr 指粗糙、带震颤的声音，如浓重的卷舌 r 音或钻头刺耳的嗡嗡声；birr 则是轻柔的嗖嗖声，没有那种粗糙的颤动感。两词读音接近，容易混用。
swish 多指物体快速掠过空气或水面时发出的唰唰、嘶嘶声，常与挥动、摆动的动作相连；birr 强调声音本身轻柔持续，并不突出动作。
Choose the next layer that will help you use birr with more confidence.
Recommended next
Missing: Collocations
Complete this area with collocations.
Includes Context & register & Memory tip
Analyze the context and learn memory tricks to remember it.
More ways to explore
Includes Synonyms & Antonyms
Expand your vocabulary with synonyms and antonyms.
Includes Spelling & sound
Explore words with similar spelling endings or sounds.
Includes Word components & Thematic vocabulary
Learn how to build related words using roots, prefixes, and thematic clusters.
Includes Idioms & Cultural references
Discover idioms, slang, and famous pop culture quotes.
Dictionary facts from ECDICT, WIKTIONARY, WORDNET.