refined; elegant; polished; graceful在作“优雅的”的解释时的区别？

refined
例句与用法:
He is a man of subtle and refined sensibility.
他是个感情细腻的男子。
He has a refined palate.
他精于品味。
Existing in native or raw form; not processed or refined.
原始的以自然的或原始的形式存在的；未进化或精炼的
The oil will be refined.
这些石油将被精炼。
She's so refined that she always eats cake with a little fork.
她非常文雅，吃蛋糕一定用小叉子。

polished
例句与用法:
He had polished the table-top until it gleamed.
他把桌面擦得很亮.
Don't smear the lens; I've just polished it.
别把镜头弄脏了, 我刚刚擦过.
His shoes were always well polished.
他的鞋总是擦得乾乾净净.
He polished off the pie and the fruit.
他很快吃完了馅饼和水果。
I polished my buttons with a handkerchief.
我用手帕把钮扣擦亮。
One that buffs, especially a piece of soft leather or cloth used to shine or polish.
擦亮者，磨光工人把东西擦亮的人，尤指用来上不光的软皮革或布料来擦亮的人
It's an honest book but it hasn't been polished.
这本书写得真诚坦率，但还未经润色。
The children loved sliding round the newly polis