The concept of legal obligation is central to the understanding of law.

心理学的理解来自于观察功能在行动中的表现。

通信的基本问题是在一点精确或近似地复现另一点选择的信息。

In business, as in life, integrity is the only currency that never loses value.

我们年轻的一代将会改变他们的国家同时也改变自己。