mathematica处理字符串

1、首先，给出一个句子a：

a="The eagle flies in the vast sky,the fish swim in the clear water,and all things are in the light of autumn to live a free life.";

2、对字符串强制换行：

InsertLinebreaks[a,36]

3、按照空格，把句子分解为单词：

b=StringSplit[a]

4、在单词的左面填充0，使得每个单词的长度为20：

c=StringPadLeft[b,20,"0"];

5、在右侧填充单词：

d=StringPadRight[b,20,"^o._"];

6、用“___”把单词两两连接，并换行：

StringRiffle[Partition[b,2] ,"\n","___"]