optical
optical 英 [ˈɒptɪkl] 美 [ˈɑptɪkl]
adj. 光学的；眼睛的，视觉的
名词复数:opticals
- Anything that's optical has something to do with sight. You could call your glasses an optical aid, since they help you see things more clearly.
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- adj. 光学的；眼睛的，视觉的
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1. He began experimenting to set optical images in 1793.
他在1793年就开始试验凝固光学图像。
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2. The key development lies in the ability of the sphere, an optical device, not only to remain invisible itself but to slow light.
研究的关键在于光纤球的功能开发，这种光学设备不仅要保持自身的隐形，还要能使光线减速。
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3. That means when the two stars finally get around to merging, they could be far away from the galaxy of their birth -- good news, as it happens, for optical confirmation.
这意味着当双星最后融合时，它们将离它们诞生的星系很远——如果这真的发生了，引力波就能在光学上得到确认，这真是个好消息。
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