我是一个普通人，只是碰巧网球打得很好。
I’m a normal guy who just happens to play tennis very well.
The best way to understand labor markets is to look at real-world data, not just theoretical models.
理解劳动力市场的最佳方式是观察现实数据，而不仅仅是理论模型。
The duty of a true patriot is to protect his country from its government.
永远不要停止学习，因为土地和牲畜总会教会你新的东西。