The beauty of mathematics lies in its ability to simplify complex problems.

尿素合成是一个幸运的发现，但它开辟了一个新的研究领域。

Time is dead as long as it is being clicked off by little wheels; only when the clock stops does time come to life.

你越是处于感恩的状态，你就会吸引更多值得感恩的事情。