Spurred on by funding policies, half of the European research articles had international co-authors in 2007, this is more than twice the level of two decades ago.
在资助政策的推动下，2007年有一半的欧洲研究论文有国际合作作者，这是20年前水平的两倍多。
2
Least rousing, he thinks, was rational argument, although his co-authors say reason might play a bigger role.
他认为，理性论证的影响最小，尽管他的合著者认为，理性可能发挥了更大的作用。
3
According to a paper in 2011 by Mr. Hsiang and co-authors, civil conflict is related to El Nino's harmful effects.