当黑洞吞噬物质时，气体和尘埃会被加热，并喷发出x射线，在图中以白色表示。
As the black hole feeds, the gas and dust heat up and spray out X-rays, as illustrated by the white rays.
穿浅色衣服：深色衣服会吸收太阳射线，浅色和白色衣服能够将光和热反射出去，因此深色衣服比浅、白色衣服的温度高。
Wear light colors: Darker colors will absorb the sun's rays and be warmer than light or white clothing, which reflects light and heat.
两个白色箭头表示从“非填充”区域中的点移出的两个任意射线。
The two white arrows represent two arbitrary rays that move out from a point in the "non-filled" region.
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