All this is no doubt true, but it does not explain why Americans are fatter than people in other rich countries, nor why they appear to have stopped getting fatter.

所有的这些无疑都是有道理的，但是他既没有解释为什么美国人比其他发达国家的人更胖，也没能解释为何美国人近来停止发胖。

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Nor why he was more successful at blackjack when he abandoned method and relied on intuition.

也不能解释为什么在玩21点时，他放弃了推理而依赖于直觉反而更加成功。

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But such techniques do not tell researchers who brought the Cowboy Wash settlement to its untimely end, nor why.

ECONOMIST: Anthropophagy

Certainly, most people at the new monument were not aware who President Aliyev was, nor quite why he was being honoured in this way.

BBC: Mexico row over Azeri leader Heydar Aliyev's statue

Nor does it know why a squirrel waves its tail in front of an angry rattlesnake.

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