opening of cock

例句：

1. 1.The rooster is the first tocrow in the morning.
   公鸡是早上第一个打鸣的。
2. 2. The hen is busy gathering eggsfor the day's meal.
   母鸡忙着收集一天的食物。
3. 3. The rooster and hen are both important membersof the flock.
   公鸡和母鸡都是家禽群的重要成员。