If you describe a person or thing as elegant, you mean that they are pleasing and graceful in appearance or style.
Patricia looked beautiful and elegant as always.
帕特丽夏看上去跟往常一样美丽优雅。
If you describe a piece of writing, an idea, or a plan as elegant, you mean that it is simple, clear, and clever.
The document impressed me with its elegant simplicity.
这份文件的简洁明了给我留下了深刻的印象。