教育学中的实验方法不仅是研究的工具，更是所有教育实践的基本原则。

You can't change the past, but you can shape the future.

Marine protected areas are like savings accounts for fish populations.

我对生态系统作为一种智能形式的想法感兴趣。

It is not from the benevolence of the butcher， the brewer， or the baker that we expect our dinner， but from their regard to their own interest.

千里之行，始于足下。

Injustice anywhere is a threat to justice everywhere.