You table a cased deck, then remove a small, thin note-pad from your shirt pocket and ask one person to name ANY card. Let's assume he says, "The Queen of Spades." You record this on the pad. You next ask a second person to name ANY number from 1 to 52. Let's assume this person says, "22". You record this too, then pick up the cased deck. You remove the cards and show that they are all different. You hand the deck to one of them, and ask that he deals down to the 22nd card... it's the Queen of Spades!

你把一副装在牌盒里的牌放在桌子上，然后从衬衫口袋中拿出一本薄薄的笔记本，问一个人，让他任意说一张牌。我们假设他说的是黑桃Q，你在笔记本上记录下来。接着你问另一个人，让他在1——52之间任意说一个数字。我们假设这个人说的是22，同样，你把这个数字记录下来。然后拿起这幅装在牌盒里的扑克牌，把牌拿出来，摊开示意一下所有的牌都是不一样的。你把牌递给他们中的一个，让让往下发牌，直到第22张，这张牌就是黑桃Q。

If you would like to inject a little comedy...

Once the card and number have been named, you can explain that you have a giant playing card in your pocket (or an envelope) and ask if everyone would be impressed if the named card was on its face, and the named number was on its back?  You remove the card and... ALL 52 card faces are printed on its face and ALL the numbers from 1 to 52 are printed on its back! You now allow at least five minutes for the laughter to subside!

Do not confuse ACAAN with inferior 'A card at Any Number' routines, where either you name the card or they select one.  The presentations in ACAAN are NOTHING like that!