The interplay between syntax and semantics is central to the study of formal languages.

Sustainability isn't a cost center - it's an investment in our collective future.

The poor are not lazy; they are just caught in a system that makes it very hard for them to escape poverty.

科学的进步在于每一步发现一种新的秩序，这种秩序将长期以来看似不同的事物统一起来。

在快速变化的世界中，适应性至关重要。