cock spring

例句：

1. 1.The old cock has a strong spring in his leg.
   那只老公鸡腿很强壮。
2. 2.The cock's spring is so strong that it can lift the hen up.
   公鸡的弹簧太强了，能将母鸡抬起来。
3. 3.The cock's spring was so loud that it woke up the whole village.
   公鸡的弹簧声音很大，把整个村庄都吵醒了。