视错觉从它们被首次发现以来一直让人类着迷，并引出了许多重要的有关我们大脑工作方式的问题。
Optical illusion have always fascinated mankind since they were first discovered, raising important questions about the way our brain works.
这些毒蛇被攻击时自然会反咬一口，那么这就引出了一个问题：眼镜王蛇是如何维持这样一种明显高风险的生活方式的？
These snakes bite when attacked, of course, which raises the question: How does the king cobra maintain such an apparently high-risk lifestyle?
尽管通用表现糟糕，奥巴马当局还是决定对它报以希望--这个改组计划已经被通过了。 但这也引出了这个行动的一个最大的不确定因素。
This small triumph of hope over experience — and the fact that the Obama administration still approved the restructuring plan — gets right to the biggest reason to worry about the G.M. bailout.
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