吹笛，吹口哨，啸声；鸣笛；吹口哨( whistle的现在分词 )；呼啸着前进；空指望；
1.
1. 号笛,鸣笛,汽笛：wheelbase轴距 | whistling号笛,鸣笛,汽笛 | winch绞车,绞盘
2. 鸣笛笛声：whistling buoy 响哨浮标 | whistling 鸣笛笛声 | white all-round light 白环照灯
3. whistling
3. 吹口哨：15 Tilting one's head(探头) | 16 Whistling(吹口哨) | 17 Twitching one's nose(皱鼻子)
4. 笛音：whistlerwave 电子回旋波 | whistling 笛音 | white 素 白 白的 白色 白色的
noun
1. the act of whistling a tune
e.g. his cheerful whistling indicated that he enjoyed his work
2. the act of signalling (e.g., summoning) by whistling or blowing a whistle
e.g. the whistle signalled the end of the game
Synonym: whistle
3. the sound made by something moving rapidly or by steam coming out of a small aperture
Synonym: whistle