五四前后民主和科学涵义的历史演进沙建孙五四运动发生以来，８０年的时间过去了。８０年后的今天，我们隆重纪念这个运动，可见它具有多么深刻的内容、历史的意义和持久的生命力。我们今天生活的社会环境，与８０年前已经迥然不同了。今天我们来纪念“五四”，当然不需要... Historical Evolution of Democracy and Scientific Connotation around the May Fourth Movement Shakjum Sun’s 80 years have passed since the May Fourth Movement took place. Today, 80 years later, we solemnly commemorated this movement, showing how profound its content, historical significance and lasting vitality. The social environment in which we live today is very different from 80 years ago. Today we have to commemorate the “May 4th”, of course, do not need ...