adj.无光泽的；无光彩的；平淡乏味的

Her eyes had lost their lustreless after the long illness, appearing dull and lifeless.
长期的病痛后，她的眼睛失去了光泽，显得暗淡无神。
The once vibrant city now lay in ruins, its buildings standing as lustreless monuments to a forgotten past.
曾经生机勃勃的城市现在成了一片废墟，那些建筑如同无光的纪念碑，矗立在被遗忘的过去之中。
The old silverware, once polished to perfection, now sat neglected in the drawer, its surface covered in a layer of lustreless tarnish.
那些曾经被打磨得光彩照人的旧银器，现已被遗弃在抽屉里，表面覆盖着一层无光泽的氧化层。
Despite the expensive price tag, the fake diamonds lacked the brilliance of genuine ones, looking utterly lustreless under the light.
尽管标价昂贵，这些假钻石却缺乏真钻的璀璨，在光线下显得毫无光泽。
The once lush forest, now stripped of its vegetation by deforestation, appeared as a vast expanse of lustreless land.
曾经茂密的森林因滥伐而失去了植被，现在只是一片广阔的、没有光泽的土地。
The model's face, under the harsh studio lights, seemed almost lustreless despite the layers of makeup, revealing her exhaustion.
在刺眼的工作室灯光下，尽管涂着层层化妆品，模特的脸看上去仍旧毫无光泽，显露出了她的疲惫。
The river that used to shimmer in the sunlight had turned into a sluggish, lustreless stream due to pollution.
因为污染，那条曾经在阳光下波光粼粼的河流变成了缓慢流动、没有光泽的小溪。
The walls of the abandoned mansion, once adorned with vibrant frescoes, were now reduced to lustreless, peeling surfaces.
那座废弃的豪宅墙壁上，曾经装饰着鲜艳的壁画，现在只剩下无光、剥落的表面。
After years of neglect, the garden's once colorful flowers had withered away, leaving behind a landscape of lustreless brown.
经过多年的忽视，花园里曾经色彩斑斓的花朵已经枯萎，只剩下一片毫无生气的棕色景象。
The once bustling market square, now devoid of vendors and shoppers, stood as a testament to the town's lustreless decline.
那个曾经熙熙攘攘的市场广场，现在没有了商贩和购物者，成为了小镇黯然衰落的见证。