光的原因不在于颜色，而在于光本身。

Profit is not the legitimate purpose of business. The legitimate purpose of business is to provide a product or service that people need and do it so well that it's profitable.

患者是我们一切工作的核心。他们的需求驱动着我们的目标并激励我们前进。

我喜欢在股票打折时买入。