实证研究中最重要的是要清楚你想要回答的问题。
"The most important thing in empirical work is to be clear about the question you are trying to answer."
游戏不仅仅是娱乐，它还可以是一种艺术表达形式。
The photograph isn't good enough. It's not radical enough.
战争的权利源于万国法，而万国法建立在全人类同意的基础上。
Strengthen international cooperation to promote the improvement of technology and management in the coal industry.