ADJ
（表示强调）活的…
You can use walking in expressions like a walking disaster or a walking dictionary in order to emphasize, for example, that someone causes a lot of disasters, or knows a lot of difficult words.
例句
He was a walking encyclopaedia...
他是一部活的百科全书。
If you ever get any ailments there's no problem as he is like a walking chemist's shop.
如果你有了什么病痛，不用着急，他就是个药铺子。