面上

In a sentence

• 我看见湖面上有几只鸭子。

  I see several ducks on the surface of the lake.

  Here, "湖面上" refers to the surface area above the lake, showing physical location on top or above.

• 面上看，他似乎很平静，但内心却很复杂。

  On the surface, he appears calm, but internally he is quite complex.

  In this sentence, "面上" is metaphorical, referring to the outward appearance or facade of a person or situation.

• 年轻人在事业的面上非常努力，展现出坚定的决心。

  Young people are working very hard in their careers, showing firm determination.

  Here, "事业的面上" implies the aspect or domain associated with careers, denoting a figurative area or scope in relation to effort.