***每日一句:2018考研英语第58句

AKHAN半导体公司目前宣布掌握了制造人造钻石玻璃(synthetic diamond)的技术，并可用于保护智能电子设备的屏幕。理论上来说，这种名为Miraj的钻石玻璃具有高硬度和低导热性(low thermal conductivity)的优点，可以令屏幕免于日常使用和坠地带来的滑痕，触手也会更为冰凉舒适。尤其是Miraj会比现在大多数智能设备使用的康宁大猩猩玻璃(Corning Gorilla Glass)和苹果手表使用的蓝宝石材质(sapphire crystal)更加耐损(resistant to scratching and less prone to shattering)，并薄度可达到1/800。但目前AKHAN不愿公开是否已有智能设备制造商(smartphone maker)有意向使用其新技术，也未细述将如何令钻石玻璃成本降至可接受的价格水平(keep the cost affordable)。一位曾在海军研究试验室工作38年之久的科学家Jim Butler对该技术的实用性表示了怀疑，他认为依靠化学汽相沉淀(chemical vapor deposition)将微米薄(micron-thick)的人工钻石层嵌在玻璃外层并不能另屏幕更加坚固，因为越坚硬的物质就越易脆(brittle)，所以在压力之下钻石层和玻璃层之间的边缘非常容易分离，最后承压还是得看玻璃本身的强度。

今天的句子：

People cherish diamonds for their beauty and the sense of status and permanence they convey to the wearer, but someday soon these most precious of stones may serve an even more practical purpose than filling out engagement rings and anniversary pendants: protecting smartphone displays from the chips and spider web–like cracks that develop after countless drops and hours of tapping and swiping.

确定主干：

并列句一：

People cherish diamonds for their beauty and the sense of status and permanence they convey to the wearer

并列句二：

these most precious of stones may serve an even more practical purpose than filling out engagement rings and anniversary pendants:

切分成分：

protecting smartphone displays from the chips and spider web–like cracks/ that develop after countless drops and hours of tapping and swiping.(定语从句)

(purpose 的同位语，解释说明有什么实用的目的。)

人们珍视钻石是因为它的美和它向佩戴者传达的身份及永恒感，但很快有一天这些珍贵的石头可能会有比镶嵌在订婚戒指和周年吊坠上更实际的用处：保护智能手机的屏幕，比如令其不出现像无数的摔打和长期的点击和滑动会造成的缺口和蜘蛛网状的裂痕。

词汇突破：

1.Cherish　珍视

2.Diamond　钻石

3.Permanence　永恒

4.Engagement ring 订婚戒指

5.Anniversary　周年

6.Pendant　吊坠

7.Display　屏幕

8.Countless　无计其数的

9.spider web–like cracks 蜘蛛网状的裂痕

10.chips 缺口

明天的句子：

加州太阳能强大到电价为负

The extraordinary success of solar power in some pockets of the world that combine sunshine with high investment in the technology mean that governments and energy companies are having radically to rethink the way they manage—and charge for—electricity.