| 1. | Positive line work and letterpress must be opaque .
阳像线划原图和注记必须是不透明的。 |
| 2. | The expansion of the envelope will gradually thin out the obscuring dust .
包壳的膨胀会使不透明的尘埃逐渐变得稀薄。 |
| 3. | In advanced stages the opaque corneas may ulcerate and even perforate .
在疾病后期，不透明的角膜可能产生溃疡，甚至穿孔。 |
| 4. | The moving current is white and opaque due to the use of a bentonite solution .
由于采用膨润土溶液，流动的异重流为白色不透明的。 |
| 5. | During these tests she was able to read a newspaper through an opaque screen .
在这些测试中，她能够隔着一块不透明的挡板阅读报纸。 |
| 6. | Carbon black is an opacifier which prevents radiant energy transmission to the interior of the propellant .
炭黑是不透明的，可以防止辐射热传到推进剂内部。 |
| 7. | And some minutely crystalline varieties, such as flint, may be opaque and of a waxy luster .
某些细小的结晶变种，如燧石，可能是不透明的，并具有腊样的光泽。 |
| 8. | A cry, a very loud cry, as of infinite desolation, soared slowly in the opaque air .
只听一声喊叫，非常响亮的喊叫，犹如发自那无穷无尽的荒凉之中，缓缓地在不透明的空中激荡。 |
| 9. | Since the thermal radiation largely stopped by ordinary opaque materials, buildings and clothing can provide protection .
既然普通不透明的材料可以在很大程度上阻止住热辐射，建筑物和衣服就能起防护作用。 |
| 10. | An opaque scope identifier that can be used with
一个不透明的范围标识符，它以后可以与 |
