每次有人拿出一个一角的银币和一个五分的镍币让他从中选一个，他总是选那个镍币。
Wherever he was offered a choice between a dime and a nickel, he always chose the nickel.
你儿子刚才吞下了一枚五分镍币，可咳出两枚一角的硬币！
他这样挑选了好多次后，有个好心的老人告诉他，一角的银币要值两个五分的镍币，以后应该选一角的银币。
When this had gone on many times, a kind old man told him that a dime was worth twice as much as a nickel, so he should choose the dime in the future.
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