英汉词典

1. 吹口哨；用口哨吹出(曲调)
    When you whistle or when you whistle a tune, you make a series of musical notes by forcing your breath out between your lips, or your teeth.

    e.g. He whistled and sang snatches of songs...
           他吹口哨并唱了几段小曲。
    e.g. He was whistling softly to himself...
           他轻声吹着口哨。

2. (吃惊、唤狗、赞叹等时)发出口哨声
    When someone whistles, they make a sound by forcing their breath out between their lips or their teeth. People sometimes whistle when they are surprised or shocked, or to call a dog, or to show that they are impressed.

    e.g. He whistled, surprised but not shocked...
           他吹了声口哨，很是惊讶但没有被吓住。
    e.g. Jenkins whistled through his teeth, impressed at last...
           詹金斯吹了声口哨，最终被打动了。

3. (火车)鸣汽笛；(水开时水壶)发出尖啸声
    If something such as a train or a kettle whistles, it makes a loud, high sound.

whistle的反义词

    e.g. Somewhere a train whistled...
           不知哪里的火车在鸣汽笛。
    e.g. ...the whistling car radio.
           车载收音机的尖啸声