irregular plural

例句：

1. 1.The irregular plural of "cat" is "cats."
   “猫”的不规则复数是“猫”。
2. 2. The irregular plural of "dog" is "dogs."
   “狗”的不规则复数是“狗”。
3. 3. The irregular plural of "child" is "children."
   “孩子”的不规则复数是“孩子”。