It's basically the same thing as a laser beam, the more familiar light beams, often red or green, used for surgery or to point at a PowerPoint presentation.

它本质上和激光束是一样的。激光是我们更熟悉的光束，经常是红色或绿色的，用于外科手术或者作为PowerPoint幻灯片演示用的激光笔。

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Japanese and Chinese lacquer work is often red or black. Sometimes it can be decorated with pieces of silver or gold metal to create an image.

日本和中国漆制作品常为红色或黑色，有时也漆上金色或银色，使外观更有光泽。

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Leaves obovate-spatulate, cuspidate, 1,5 – 3 x 0,8 – 2,5 cm wide at the widest part, glaucous bluish-grey, often red-flecked beneath, margins reddish.

叶：倒卵状匙形，尖，1.5 - 3厘米长，0.8 - 2.5厘米宽（在最宽的部分），叶为带有白霜的蓝灰色，叶背面常有红色斑点，叶缘红色。

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An angry person's neck often becomes red.

VOA: special.2009.12.06

Mr Wright said he wanted resources concentrated at the "sharp end" rather than "costly and often unnecessary red tape".

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Most MRSA infections acquired in community settings present themselves as sores or boils and often appear red, swollen, painful or with drainage such as pus, the CDC says.

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Standard Type Ia supernovae are binary systems in which a white dwarf star draws so much matter from its companion (often a red giant) that it undergoes a kind of energy overload and detonates.

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