When they leave the main sequence, they become a bright red supergiant, and eventually become hot enough to fuse carbon into heavier elements.

当它们离开主序时，它们会成为鲜红色的超红巨星，最终变得足够热，以至于能够将碳聚变为更重的元素。

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For example, the eye will notice faster the elements that are larger or having greater contrast with the background color or having a hot color.

例如，视觉会更快的注意到比较大的元素，或者与背景色有强烈对比的元素，或者具备暖色调的元素。

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Red giants are hot enough to turn the helium at their core, which was made by fusing hydrogen, into heavy elements like carbon.

红巨星的温度足够高，可以将其核心中由氢聚变成的氦再转变为重元素，比如碳。

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In fact, initially, they designed their new lines of photo typesetters on the old, hot-metal architecture and tried to incorporate elements of the hot-metal process into the phototypesetting.

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