Would-be world-wise types are sure to weigh in whenever an awareness meme spreads on facebook , for example .

无论何时，当某种思潮开始在Facebook等网站上传播时，一定会在世界范围内引发类似的运动。

What we 've found is that content spreads on different networks for different reasons .

我们发现，内容因为不同原因在不同网络传播。

Measles spreads very easily from person to person .

麻疹非常容易造成人与人之间的传播。

The latest eu / imf assessment spreads the blame .

最新的欧盟/国际货币基金组织评估散布了这种指责。

This is how content spreads virally .

这是网站内容得以病毒式传播的原理。