形容才德、文章等完美自然to be as perfect as nature itself

• 他们运用有英伦风格的皇室题材做设计浑然天成。

  They made a beautiful design using a British-style royal theme.

• 乌镇的水、乌镇的桥，还有青砖，木舍浑然天成，漂亮极了。

  The water and bridges in Wuzhen, as well as the houses in brick and wood, are natural and very beautiful.