recurved spit

例句：

1. 1. The doctor carefully examined the patient's tongue and found a recurved spit on it.
   医生仔细检查了患者的舌头，发现上面有倒钩状的唾液。
2. 2. The old man spat out a recurved spit as he coughed.
   老人咳嗽时吐出了一个倒钩状的唾液。
3. 3.The scientist observed the animal's behavior and noted that it spat out recurved spit when threatened.
   科学家观察了动物的行为，注意到它在受到威胁时会吐出倒钩状的唾液。