experienced 测验

The story struck the depressingly familiar note with which true stories ring in the tried ears of experienced policemen. [ …] The second note, the high alarum, not so familiar and always important since it indicates the paramount sin in Man's private calendar, took most of them by surprise although they had been well prepared.

I thought of Mum, happily battling away in there today, an experienced sale-goer, a bargain-hunter par excellence, unaware, as she muscled professionally through the scrum, intent on her battle to secure at least 50 per cent off the recommended retail price, where she would end her day.