不过，其他几个因素让投资者对这家颇有潜力的赚钱机器另眼相看。
However, several factors warrant investors taking another look at this potential cash cow.
变上限积分是积分学的一个重要理论，其运算结果仍以函数的形式体现。研究这类函数，得出几个颇有理论意义的定理。
Integral that upper limit of integral is variable is a important theory, results of operation is function forma after all. Research this kind of function, get a few theorem.
谁知道这是否有用？但它有几个方面颇有意思。
Who knows if this might work? But it is intriguing on several levels.
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