平庸 (píng yōng): ธรรมดา

He has worked at this company for ten years, but his performance has always been mediocre, and he has never received a promotion.

The plot of this movie is mediocre, and the acting has no highlights either, so the box office was very poor.

The food at that restaurant tastes mediocre, yet the prices are not cheap; I won't go there again.

He could have become an outstanding painter, but due to lack of effort, he ultimately became only a mediocre artist.