These are known as Diploma Mills and are illegal in the United States.

这些项目被认为是文凭工厂，并且在美国是非法的。

youdao

But most students study at lacklustre public universities or at private diploma mills.

但大多数学生进的都是些毫无生气的公立大学，或者就是私立的“文凭工厂”。

youdao

So far we have talked about planning for school and about subjects like online education and diploma mills.

迄今为止，我们已谈论了择校计划以及有关诸如在线教育和文凭工厂之类的话题。

youdao

But most students study at lacklustre public universities or at private diploma mills.

ECONOMIST: Education in Vietnam

Instead of these for-profit diploma mills, we should focus on making vocational training a more integral part of our high schools and community colleges.

FORBES: A College Education Should Not Result in Crushing Debt

The for-profit college business model is essentially built on these lines: diploma mills which exist solely on the government dime and yet are almost entirely unregulated.

FORBES: The Next Step in Scott Walker’s Corporate Education Reform Agenda: Diploma Mills