magnitude
noun
1 [countable] (largeness) 巨大; (vastness) 广大;
the magnitude of this epidemic is frightening 这种流行病传播范围之广令人惶惶不安
2 [uncountable] (importance) 重大;
of the first magnitude 最重要的;
the magnitude of a problem 问题的重要性
3 [uncountable] (size) 大小;
an order of magnitude 数量级
4 [countable] Astronomy 星等