A people without children would face a hopeless future; a country without trees would face a future with even less hope.

心理学不仅要描述意识的事实，还要解释它们。

A 1% drop in user experience becomes a 100% disaster at scale.

在我们迈向低碳未来的过程中，天然气将在能源结构中发挥关键作用。