turn on their heel

• vi. 突然转身(急向后转)

turn on their heel的用法和样例：

例句

用作不及物动词 (vi.)

1. She turned on her elegantly shod heel.
   她突然转身，迈开穿着雅致的皮鞋的双脚离去了。
2. The fox doubled back on its tracks.
   狐狸突然转身循原路急逃。