| 1. | You can cover your eyes with an opaque eye mask .
你可以用不透光的眼罩把眼睛蒙住。
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| 2. | A standing opaque beacon may be useful in addition .
此外，也可以使用常设的实体觇标。
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| 3. | Positive line work and letterpress must be opaque .
阳像线划原图和注记必须是不透明的。
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| 4. | Materials through which no radiation is propagated are called opaque .
辐射线不能透过的物质叫不透明体。
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| 5. | The method applies to both opaque and transparent objects .
这个方法既适用于不透明物体，又适用于透明物体。
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| 6. | 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。
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| 7. | 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。
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| 8. | 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。
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| 9. | A circular opening in an opaque screen transmits only a small circular patch of a wave surface .
不透明屏上一个圆孔仅仅透射波面的一小圆块。
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| 10. | 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。
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