Grammar Note
常表示物体快速移动时发出的嗖嗖声
发出呼呼声
birrs — third person singular of birr
先理解核心含义，再看它在真实句子里的用法。
发出呼呼声
make a soft swishing sound
The fan birred softly in the corner of the room.
风扇在房间角落里呼呼地响着。
发出轻柔的嗖嗖声
make a soft swishing sound
birr
Base
原形
birrs
3rd person
第三人称单数
birring
-ing
现在分词
birred
Past
过去式
birred
Past participle
过去分词
The arrow birrs through the air.
箭嗖嗖地穿过空气。
The machine birred softly in the corner.
机器在角落里轻轻地发出呼呼声。
The bees are birring around the hive.
蜜蜂正在蜂箱周围嗡嗡地飞。
规则动词
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。
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。
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常表示物体快速移动时发出的嗖嗖声
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY, WORDNET.