True leadership in forestry means balancing economic growth with ecological stewardship.

不平等并非不可避免。它是我们通过制定的政策所做出的选择。

The most expensive cost in free-to-play games is players' trust—once overdrawn, it can never be bought back.

A ship is always referred to as "she" because it costs so much to keep one in paint and powder.

因果推断的本质是超越数据，询问如果我们干预会发生什么。