These supernovae, called Type 1a, serve as cosmic mile markers to measure expansion of the universe because they can be seen at large distances, and they follow a reliable pattern of brightness.
这类名为Ia型的超新星爆发由于可以在很远的距离上被观测到，并且亮度遵循可靠的模式，它们被当成测量宇宙膨胀的里程计。
The solutions below are descriptions of how these issues have been recurrently solved and may serve as a pattern to help you on your next project.
下面的解决方案描述了这些问题是如何循环地解决的，并且可以作为模式用于下一个项目，以助您一臂之力。
A global aspect utilizing a signature pattern based on packages and the inheritance hierarchy would serve you better in this situation.
在这种情况下，利用基于包和继承层次结构的签名模式的全局方面可以做得更好。
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