retrocele

例句：

1. 1.The archer released the retrocele and shot it straight at the target.
   这位弓箭手放出了回旋镖，直接射中了靶心。
2. 2.The children were playing with retroceles in the park.
   孩子们在公园里玩着回旋镖。
3. 3.The hunter used a retrocele to surprise his prey.
   猎人用回旋镖来惊吓他的猎物。