世界充满了迹象和奇迹，但我们视而不见地经过它们。
The world is full of signs and wonders, but we pass them by without seeing.
化学的进步以新元素的发现和分析方法的改进为标志。
The elements of mind are to be discovered by systematic introspection.
我希望我们能利用网络跨越障碍，连接文化。
The ability to focus attention is crucial for learning, memory, and performance in complex tasks.