amphidetic ligament

例句：

1. 1. The surgeon had to amputate the limb to save the patient's life.
   外科医生不得不截肢以拯救病人的生命。
2. 2.The athlete was injured during the race and had to be helped off the field.
   运动员在比赛中受伤，不得不被帮助离场。
3. 3.The scientist discovered a new type of amphibian that can survive in both freshwater and saltwater.
   科学家发现了一种可以在淡水和咸水环境中生存的两栖动物新品种。