The concept of legal authority is essential for the functioning of a legal system.

我不认为自己是一个碰巧是黑人的作家。我认为自己是一个黑人作家。

The discovery of topological insulators has opened up a new frontier in condensed matter physics, where the interplay between topology and symmetry leads to novel quantum states of matter.

不要吹开毛发去寻找小疤痕，不要洗净污垢去察看难以知晓的毛病。

云计算的普及将加速全球数字经济的融合与发展。