1. Now the snag in this sort of anecdote is of course that one cannot distinguish cause and effect.
    当然, 这类奇闻中的疑难处当然在于人们无法区别因与果.

2. Now the snag in this sort of anecdote is of course that one cannot distinguish cause and effect. Was the noise a cause of the illness, or were the complaints about noise merely a symptom?
    这类奇闻的疑难之处是无法区别因果关系。是噪音引起了（精神）病呢，还是（精神）病的症状之一是对噪音的抱怨？

3. He made some routine observations upon the unhealthy effect of the night breeze at that season.
    他照例说了些诸如这个季节的夜风对身体不好之类的话。

4. Did the medicine have any effect?
    这药有效吗？

5. As a result, such books actually have more effect in the communities where they are used than government publications, which cost thousands of dollars more to produce.
    这样一来，这些书在使用它们的社区里所产生的影响要比政府出版的书籍更大，而政府出版的书籍成本要高出数千美元。

6. A succession of scientific studies of animals implies that physical activity has a positive effect on mental functioning.
    对动物的一系列科学研究表明，体育活动对智力的发挥有积极作用。

7. And while animals aren't people, he says it is logical to make the inference that an effect found in rats may also apply to humans.
    他说尽管动物不是人，但依此推断在老鼠身上发现的功效同样适用于人也合乎逻辑。

8. "The nails highlight each elegant movement of their hands. It's a delightful effect."
    "长指甲使手部的每一个动作都更显得十分优美，效果真好看。"

9. And to ensure the populations were "pure", the study was confined to groups that were in their present locations as of 1492, before the first major movements from Europe began — in effect, a genetic photo of the world when Columbus sailed f
    为了确保种群的"纯正"，这项研究将对象限定于其目前的生活区域仍与1492年以来相同的那些群体，即在来自欧洲最初的大规模迁移之前。这实际上就是一幅真实的哥伦布驶向美洲时期的世界人口基因分布图。

10. Sometimes I kiss and hold Laurie so much she starts crying — which is, in effect, what my grandmother was doing to my mother, all her life.
    有时候，我又亲又抱劳里，把她都要弄哭了。实际上，外婆一生都是这样对待妈妈的。