①Magnitude is used in stating the size or extent of something such as a star, earthquake, or explosion.【n.星等(指星的亮度);震级;(爆炸的)强度】
②If you talk about the magnitude of something, you are talking about its great size, scale, or importance.【n.巨大;庞大;重要(性)】
①The San Francisco earthquake of 1906 had a magnitude of 8.3.
②These are issues of great magnitude .
《China Daily》一篇关于东京的文章 Friendship forged between Japanese quake survivor; Chinese teenager 也出现了这个表达：
这里再补充一个关于“magnitude”的短语： order of magnitude 程度;重要性【You can use order of magnitude when you are giving an approximate idea of the amount or importance of something.】
America and Russia do not face a problem of the same order of magnitude as Japan.
[scode type="share"]act up[/scode]
①If something is acting up, it is not working properly.【运作不正常；出毛病】
②If a child is acting up, they are behaving badly.【（孩子）耍脾气，捣蛋】
①She was messing with the coffee pot, which was acting up again.
②I could hear Jonathan acting up downstairs.