N-UNCOUNT (尤指在乡间以休闲或锻炼为目的的)散步,步行 Walking is the activity of taking walks for exercise or pleasure, especially in the country.
Recently I've started to do a lot of walking and cycling. 最近我开始经常散步和骑自行车。
...a walking holiday. 徒步旅行的假日
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.
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。