你不必天天自寻麻烦去辨别真伪，但是，如果你有理由认为一枚硬币或一张钞票是假的，也许这些小小的提示将会帮助你。
You don't need to look for trouble ail the time, but if you have reason to think a coin or bill is a counterfeit, perhaps some of these tips will help you out.
有很多种方法，比如在硬币上拴上鱼线，用假的硬币，或者用最原始但却最有效的方法——猛踹机器的右侧。
There were many ways to do it: coin on a fishing line, the fake-coin maneuver, and the most primitive and surprisingly effective method of all — simply hitting it hard in the right spot...
过去人们在收到付款时，常常试扔一下 硬币，听听其声音是真的，还是由假金属制作的。
People used to test coins that were offered in payment, to see if they rang true or were made of false metal.
过去人们在收到付款时，常常试扔一下 硬币，听听其声音是真的，还是由假金属制作的。
People used to test coins that were offered in payment, to see if they rang true or were made of false metal.
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