【英语时差8,16】你能辨别珍珠的真假吗？（下）

Pearls are rough because nacre is formed of hard, irregular crystals. At a microscopic¹ level, these crystals make a series of irregular plates and ridges² on a pearl’s surface. This crystalline structure, which gives a pearl its iridescent³ properties, is also responsible for its gritty texture⁴. Fake pearls can be made of glass, and the best ones are covered with a layer of finely ground fish scales to give them luster⁵. While they might look like pearls, their surfaces will always be smoother and softer, and your sensitive front teeth can tell the difference.

1 microscopic   

adj.微小的，细微的，极小的，显微的

参考例句：

• It's impossible to read his microscopic handwriting.不可能看清他那极小的书写字迹。
• A plant's lungs are the microscopic pores in its leaves.植物的肺就是其叶片上微细的气孔。

2 ridges   

n.脊( ridge的名词复数 )；山脊；脊状突起；大气层的)高压脊

参考例句：

• The path winds along mountain ridges. 峰回路转。
• Perhaps that was the deepest truth in Ridges's nature. 在里奇斯的思想上，这大概可以算是天经地义第一条了。

3 iridescent   

adj.彩虹色的，闪色的

参考例句：

• The iridescent bubbles were beautiful.这些闪着彩虹般颜色的大气泡很美。
• Male peacocks display their iridescent feathers for prospective female mates.雄性孔雀为了吸引雌性伴侣而展现了他们彩虹色的羽毛。

4 texture   

n.(织物)质地；(材料)构造；结构；肌理

参考例句：

• We could feel the smooth texture of silk.我们能感觉出丝绸的光滑质地。
• Her skin has a fine texture.她的皮肤细腻。

5 luster   

n.光辉；光泽，光亮；荣誉

参考例句：

• His great books have added luster to the university where he teaches.他的巨著给他任教的大学增了光。
• Mercerization enhances dyeability and luster of cotton materials.丝光处理扩大棉纤维的染色能力，增加纤维的光泽。