它经常用于与activity Trends连接,Activity Trends收集并存储活动统计,作为当前的观测资料和历史趋势。
It is often used in conjunction with activity trends, which collect and store activity statistics as current observations and historical trends.
历史学家在研究中使用大量的原始资料和二手资料。
Historians use a wide range of primary and secondary sources for their research.
这两份报告包括了一份详尽的,主要以美国的历史资料和近期经验为依据的有关天花疫苗安全性的综述。
The reports included a detailed review of the safety of smallpox vaccine based on historical data as well as recent experience, particularly in the United States.
Almost everything is inference and judgment, and very little is anything that you want to call proof.
这段时期几乎所有的历史都是推断和猜想,只有很少资料是你们想找的那种证据
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