数学归纳法——顺藤摸瓜,由近及远长长的一队士兵走在路上.将军把一句口令告诉最前面的士兵,这个士兵开始把口令往后传.如果每个士兵听到口令之后都往后传,这个口令自然会传遍全队.类似地,如果有一串句子,按顺序一个一个排好了,也会产生这种多米诺骨牌现象:如果第一句是正 Mathematical inductive method - follow the example, walked by a team of soldiers near and far .General told the front of a sentence of the soldier, the soldier began to pass the password back .If each soldier to hear the password after After the pass, this password will naturally spread throughout the team. Similarly, if there is a string of sentences, one by one arranged in order, will produce this domino phenomenon: If the first sentence is positive