解释：情绪变化会影响身体生理反应，如贪心时口水增多，悲哀时流泪，体现了情绪与健康的关联。

I tend to think that the longer the pause, the more emphatic the statement.

Of the people, by the people, for the people.

In business, if you're not moving forward, you're falling behind.

培养出对阅读的真心热爱，这可是一种超能力。

高分子化学的未来在于合成具有特定应用定制性能的新材料。