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

### Instruction:
 四位同学根据他们的出生月份比较年龄。他们发现乔琳比瑟丽斯大两个月，而瑟丽斯比艾沃大五个月。然后，利昂比艾沃大两个月。乔琳比利昂大多少个月？


### Response:
 艾沃 = 2个月
利昂 = 2 + 2 = 4个月
瑟丽斯 = 5 + 2 = 7个月
乔琳 = 7 + 2 = 9个月
乔琳比利昂大5个月（9 - 4）。