1、
To his dismay he saw that the thread was no longer silver but gray and lusterless.
令他吃惊的是，他看到魔线不再是银色的了而是灰色而又没有光彩。
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2、
Become dull or lusterless in appearance; lose shine or brightness, as of a varnished surface.
涂漆的表面，呈现出变钝或没有光泽，失去光泽或光亮。
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3、
Hair is withered and yellow, lusterless forebode incomplete iron and be short of vitamin B.
头发枯黄、无光泽预示缺铁和缺乏维生素B。
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4、
特征：A。颜色多样，有哑光、光面之分B。不同厚度、不同韧性；
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5、
The cold, pale sunlight fell on their gloomy faces , long hair and lusterless eyes.
淡漠的阳采光着她们的没精打彩和长发翻白眼.
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6、
