1、东欧剧变
...disastrous attacks 灾难性的袭击drastic changes in eastern Europe 东欧剧变dumb bomb 自由下落炸弹；普通炸弹p>study by correspondence 通过函授学习 ...
2、苏东剧变
...：思想文化，苏东剧变，精神文明，社会文化体制改革 [gap=802]Key words: thought culture，drastic changes in Eastern Europe， spiritual civilization，social and cultural reform ..