Student or Learner
Sorry I did not register when I tried a few minutes ago as I am a new comer and not familiar with the environment. Now I post the question again.
could anybody help: whether "function, principle, structure and material" in the following sentence should be plural:
The final realization of a product is decided by design knowledge such as function, principle, structure and material.
I think plural should be used for them but not very sure.
Many thanks for any help in advance.