汽车不仅是交通工具，更是生活方式的载体。

呵，乐趣，尽管有人肯定会因你而倒霉，但你毕竟是如此令人快慰。

The concept of computational efficiency is central to the design of learning algorithms.

P与NP问题是计算机科学中最重要的未解决问题之一。

The human body is a complex puzzle, and viruses are just one piece of it.

Man's survival, from the time of Adam and Eve until the invention of agriculture, must have been precarious because of his inability to ensure his food supply.