You can describe something as burnished when it is bright or smooth.
例句
The clouds glowed like burnished gold.云彩像被擦亮的金子一般闪闪发光。
英英词典释义
Adjective
1. made smooth and bright by or as if by rubbing; reflecting a sheen or glow;
"bright silver candlesticks""a burnished brass knocker""she brushed her hair until it fell in lustrous auburn waves""rows of shining glasses""shiny black patents"