Obscuring dust lanes, young blue star clusters and reddish star forming regions surround a core of yellowish light from an older population of stars.

遮蔽尘带、年轻的蓝色恒星团和红色调的恒星形成区，包围着核心发出黄色光芒的老年恒星群体。

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Though they are strikingly visible in this image from Spitzer's infrared array camera, they are completely obscured in visible light, buried within the core of the surrounding dust cloud.

尽管它们在斯比策的远红外摄像机的图片里非常醒目，仍在云雾区域的中心地带发出的强光之下黯然失色。

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Each one covers the core of each topic in a light, focused discussion that cuts directly to the core of the subject without a lot of distractions.

每本书都清晰、针对性地讨论了各个主题的核心内容，它们直接深入主题，没有涉及其他无关内容。

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One example the company has developed is a crystal fibre that squeezes light into such a narrow core that the intensity of the light modifies the optical properties of the glass itself.

ECONOMIST: A new approach to making optical fibres

In the same way, the pattern of holes in a crystal fibre can create the equivalent for light of a graphite core and a diamond cladding.

ECONOMIST: A new approach to making optical fibres

And although that friendship and alliance has to continually be renewed and reshaped in light of new circumstances, the core values and the shared vision at the heart of our alliance remains strong, and I am very confident that working with Prime Minister Kan, we are going to be able to continue to build on that tremendous history over the last 50 years.

WHITEHOUSE: President Obama & Prime Minister Kan at G20 Summit