yodeling

n.singing by changing back and forth between the chest voice and a falsetto

1. The boy was yodeling in the meadow to practice his vocal skills.
   那个男孩正在草地上用真假嗓音唱歌，练习他的歌唱技巧。
2. Yodeling is a popular tradition in Alpine folk music.
   真假嗓音的唱法是阿尔卑斯民间音乐中的一种流行传统。