Below is an instruction that describes a task. Write a response that appropriately completes the request in Chinese. Please answer in Chinese.

### Instruction:
 张比李大两倍。李今年12岁。张的弟弟郑比张大两岁。郑今年多大？


### Response:
 张的年龄是12岁的两倍 = 24岁。
郑比张大两岁 = 24岁 + 2岁 = 26岁。