交界

In a sentence

• 两国的边境在山谷处有交界。

  The borders of the two countries intersect in the valley.

  In this sentence, '交界' describes the physical intersection or meeting point of two countries' borders.

• 自然与城市的交界处可以闻到泥土的芬芳。

  At the meeting point of nature and the city, one can smell the fragrance of the soil.

  Here, '交界' refers to the transitional zone or interface between two different areas, nature and urban spaces.

• 文化与技术的交界为社会发展提供了新的视角。

  The intersection of culture and technology offers new perspectives for societal development.

  In this context, '交界' metaphorically signifies the point of convergence between two abstract concepts, culture and technology.