luster

Then it’s really no more than a means of transportation, it too loses its luster..然后它就仅仅是一个名符其实的交通工具，失去了它的光彩。

College graduates may be losing some of their luster for reasons beyond technology and trade..大学毕业生也许会因为技术和贸易之外的原因失去一些光彩。

No one knows for sure when the tide started to turn, or the exact moment when American gold started its slow but seemingly irreversible loss of luster..无人确切知晓这波潮汐的消退始于何时，也没有人精确的得知美金的光泽从何时起开始缓慢，但不可逆转的褪色。

metallic luster,金属光泽；金属闪光料

pearly luster,珍珠光泽

bright luster,镜面光泽