B2 [ I or T ] to make a high sound by forcing air through a small hole or passage, especially through the lips, or through a special device held to the lips吹哨子;(尤指)吹口哨;用口哨吹出
[ I + adv/prep ] to make a long, high sound while moving quickly through or past something呼啸而过
[ I ] When birds whistle, they sing in high musical notes.(鸟)啼啭,啭鸣
More examples
He whistled to call his dogs.
She always whistles in the bath.
He was whistling a merry tune.
B2 the sound made by someone or something whistling哨子声;口哨声;呼啸声
an object that you hold to your lips and blow through in order to make a loud, high sound哨子,笛子
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