Only if such event finds itself in mother current of the human civilization, and is a milestone in modern history,and its social significance goes beyond nation in which it occurs it becomes a prelude of coming into a center of scientific activity.

• 只有这些事件的意义超越了国度，处于人类社会和人类文明发展的主流，并且成为整个人类近现代史的里程碑，才成为发生这些事件的国家进入科学活动中心的前导。