You remember: thousands of two pence coins lie on a moving shelf, and you have to drop in coins of your own in the hope it will cause the pennies to tumble down for you to collect.

你还记得：在一个移动带上有数千个2便士硬币摞成摞，你必须投掷自己的硬币，并希望它会导致那些成摞的硬币被击倒，这样你就能悉数归拢这些硬币了。