Despite the complexity of the financial state of real world, a two-class problem has usually been considered to tackle this classification task.

尽管现实中企业的财务状况复杂多样，人们往往将财务预测当作两分类问题来解决。

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Two young women in Ireland were studying the problem in physics class.

在爱尔兰的物理课上，两名年轻女性正在研究这一问题。

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Then, I will cross your company off my potential problem-client list and maybe make room on my calendar for taking a class or two.

然后，我将把您的公司从潜在问题客户列表中划掉，然后腾出空来参加一门或两门课程的学习。

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Romney's core problem is this: He heads a party that must win two-thirds of the white working-class vote in presidential elections to compensate for its weakness in almost every demographic category.

CNN: Mitt Romney's painfully bad week