解释：大部分鸟类都是雄性的，而雌鸽却是雌性的，说明了鸟类性别的特殊性。

Leadership is about making tough decisions and standing by them, even when they are unpopular.

每一部电影都是一次旅程，不仅对观众如此，对电影制作人也是如此。

The key to long-term success is creating value for society.

正义的概念不是法律概念，而是道德概念。