一个有著许多资料的网站，多数资料由蒙特利国际研究学院的防止核武扩散研究中心提供。
A website packed with data, much of it provided by the Center for Nonproliferation Studies at the Monterey Institute of International Studies.
一个由Framingham心理研究中心追踪数十年的，接近5000人的人际关系调查显示，好心情通过附近的家庭，朋友和邻居的社交网络扩散开来。
A study of the relationships of nearly 5, 000 people tracked for decades in the Framingham Heart study shows that good cheer spreads through social networks of nearby family, friends and neighbors.
英国癌症研究中心称，这一研究提供了阻止癌症扩散的新途径。
Cancer Research UK said the study provided fresh understanding of ways to stop cancer spreading.
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