如果没有太阳，什么也不能存在。
生物学也不能解释为什么高收阶层和低收入阶层的妇女在健康问题和主要死亡和残疾原因方面存在如此巨大的差异。
Biology cannot explain why the health problems and the leading causes of mortality and disability differ so dramatically between women in high - and low-income groups.
易用也不能贬低形而上学这个单词的精确含义，人们为什么理解某些界面，而不理解其他界面存在多种实际的原因。
Nor does it help us to devalue the precise meaning of the word. There are very real reasons why people understand certain interfaces and not others.
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