a class in a system of classification determined by size, each class being a number of times (usually ten) greater or smaller than the one before
数量级。
[mass noun]size or quantity
尺寸,大小;量
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the new problems were of a different order of magnitude .新问题的重要性是不同的。
[mass noun]the arrangement of a number of items determined by their relative size
根据大小的排列
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the items are arranged in ascending order of magnitude .这些东西由小到大按序排列。
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