其实，减肥的数学相当简单，只有减法。
The mathematics of weight loss is, in fact, quite simple, involving only subtraction.
在系统后面的数学相当错综复杂。
男性和女性在数学能力上的差别实际上是相当小的。
The differences between men and women in mathematical ability are actually fairly small.
数学对他来说，相当困难。分数和百分数是第一次见面。
Math is difficult for her; fractions and percentages are completely new.
这种现象的数学分析通常是相当困难的。
A mathematical analysis of this phenomenon would generally be considered quite difficult.
几天前，我在数学考试中做的相当不错。
几天前，我在数学考试中做的相当不错。
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