个许可确实是一个不小的数目，但是大多数都可归为两类：学术许可和互惠许可。
Fifty licenses may seem like a daunting number, but most of those fall into two categories: academic licenses and reciprocal licenses.
一篇数学的学术论文一有很多页，历史类的学术论文则会有上百页。
A thesis can be dozens of pages in mathematics, or manyhundreds in history.
科学和医学新闻从业人员已经遭受许多次报业的巨大冲击，至少两个广受好评、塑造健康类新闻记者的学术项目被暂停了。
Science and medical journalists have takenmany of the largest newsroom hits, and at least two highly regardedacademic programs that trained health journalists were recentlysuspended.
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