有学者已就清代级数论的一组初始条件作了不少解释，至于它被近代级数论完全取代的决定因素则未论及。

The initial conditions of Qing-times series have been explored by many scholars, however, the reasons why it was entirely replaced by modern series have not been discussed yet.

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当然，这里有不少情感因素。

Of course, there are emotional issues.

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我们有不少很好的球员，他们是我们成功的重要因素。

There are some terrific players here. Then it becomes part of the process.

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