呼呼

hūhu

A whirring noise,a hum, adding behend an adjective to express a state

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hū hū

v. whirr

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hu1 hu1

(onomatopoeia) the sound of the wind or the breathing of sb who is sound asleep

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呼呼|呼呼 [hū hū] ► (onom.) sound of the wind or the breathing of sb who is sound asleep