27Local economists have appeared into their crystal balls and observed some thing somewhat terrible.当地的经济学者们已预测到将会出现棘手的问题。《柯林斯英汉双解大词典》
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景观水晶，就是包裹体组成各种造型特异的水晶，有的似山水，有的似人物，有些像文字，有些像动物，植物，器物等等。
诗中道出一段唐代由盛变衰的史实。玄宗末年，杨贵妃得宠，三姐妹并封为国夫人。他们养尊处优，奢华至极，仆人用水晶盘将珍馐佳肴端到宴席上，美人觉得没有口味，懒得动筷子。作为“诗圣”作为“史诗”，紫驼一段写饮食之精美，不空发议论，只尽情揭露事实，无一刺讥语，无一慨叹声，却使人于以外得之：此诗之善讽也。以史为鉴，这样的世道，这样的人物，国家不出“安史之乱”那样的大祸反倒不正常了。
条痕颜色：无色。矿物粉末的颜色叫条痕。它可以消除假色，减弱他色，保留自色，是比矿物的颜色更为可靠的鉴定特征之一。
当二氧化硅结晶完美时就是水晶；结晶不完美的就是石英：二氧化硅胶化脱水后就是玛瑙；二氧化硅含水的胶体凝固后就成为蛋白石；二氧化硅晶粒小于几微米时，就组成玉髓、燧石、次生石英岩。
对任何宝石来说，颜色都是非常重要的，水晶也不例外。如果是水晶晶体是有颜色的，如粉水晶、黄水晶、紫水晶等，其颜色评价的最高标准则是明艳动人，不带有灰色、黑色、褐色等其他色调。如粉水晶，颜色以粉红为佳；紫水晶，要求颜色为鲜紫，纯净不发黑；黄水晶，要求颜色不含绿色、柠檬色调，以金橘色为佳。对于发晶来说，晶体的颜色也是很重要的。相同发丝的金发晶，晶体完全无色（白水晶）和晶体略偏茶色，肉眼的视觉观感也是有差别的，所以前者的价格会高于后者。
11I very carefully opened the package and located a crystal bell inside.我小心地打开包裹，发现里面有一个水晶钟。
24I intend to make my that means crystal distinct.我想把我的意思解释得清清楚楚。《牛津词典》
The definition of the good appears evident; a reliable is usually thought of as staying challenging and firm. Upon inspection, nevertheless, the definition turns into a lot less straightforward. A dice of butter, one example is, is hard immediately after getting saved in the fridge and is Obviously a good. Right after remaining to the kitchen counter for per day, the identical cube results in being fairly smooth, and it really is unclear Should the butter need to however be viewed as a sound.
用手去触摸水晶，天然水晶通常温度要比人造水晶的要凉的多；用眼观察，天然水晶通常有棉絮状的包裹体，这个是人造水晶所没有的。
国家还并未给天然水晶提供一个等级划分的具体标准，水晶品种繁杂，每一品种都有他不同的评判标准。
《古今小说·李公子救蛇获称心》：“器皿皆是玻璃、水晶、琥珀、玛瑙为之，曲尽巧妙，非人间所有。”
crystal Alteration is variable: absent in many crystals, in Many others making dense sericite aggregates which can clearly show some recrystallization outcomes to make coarser-grained white mica. From the Cambridge English Corpus The tridymite crystals are rectangular or wedge-formed and are occasionally arranged in aggregates. With the Cambridge English Corpus Also, haloarchaeal cells had been embedded within salt crystals below laboratory problems and subsequently analysed by gentle microscopy. Through the Cambridge English Corpus The white clouds (typically sparse) had been also extensively considered to be getting composed of small crystals of drinking water ice, alternatively like cirrus in our environment. In the Cambridge English Corpus They may be located in evaporite salt lakes and will be trapped in salt crystals during evaporation. With the Cambridge English Corpus Hence, the cells (organelles and membranes) are ruined mechanically by ice crystals, leading to Loss of life by way of mobile lysis. Within the Cambridge English Corpus The crystals were Utilized in the initial click here or second orders of reflection. In the Cambridge English Corpus Within our 8xperiments, the crystals ended up cubes with a base area of 8 e mm. From your Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : result of temperature and strain.