1、He doesn't need any dictionary, because he is a walking dictionary himself.
他不需要什么字典，因為他本身就是一本活字典。

2、You don't need to buy any dictionary. You're a walking dictionary yourself.
你根本就不需要買字典，你本身就是一本活字典了。參考答案。

3、You are a walking dictionary /encyclopedia
你簡直是活字典/百科全書。

4、Why he was known as a walking dictionary it?
為什么他被稱作為一本活字典呢？

a walking dictionary翻譯