And he walks out into the farmyard and he observes 20 heads and 56 legs.
这个农场主有一群猪--这是漫长的一天,一群猪和一群鸡。
You could say, I could have zero chickens and 20 pigs, does that work? I've got one chicken and nineteen pigs, does that work?
为什么简单列举出所有可能的情况,再一个来检验?你可能会说,我可以有0只鸡和20只猪,这能行吗?
This means there is no more chicken and egg.
这意味着不再有单个的鸡和蛋了。
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