Word删除不正常的回车符

原始的文字如下，一共两个段落，但是每一个段落里面的回车是乱的。

Gene expressions measured using microarrays usually suffer from the missing value problem. However, inmany data analysismethods, a complete data matrix is required. Although existing missing value imputation algorithms have shown good performance to deal with missing values, they also have their limitations. For example, some algorithms have good performance only when strong local correlation exists in data while some provide the best estimate when data is dominated by global structure. In addition, these algorithms do not take into account any biological constraint in their imputation. In this paper, we propose a set theoretic 排版之后的如下：

Gene expressions measured using microarrays usually suffer from the missing value problem. However, inmany data analysismethods, a complete data matrix is required. Although existing missing value imputation algorithms have shown good performance to deal with missing values, they also have their limitations. For example, some algorithms have good performance only when strong local correlation exists in data while some provide the best estimate when data is dominated by global structure. In addition, these algorithms do not take into account any biological constraint in their imputation. In this paper, we propose a set theoretic 操作步骤：

1：先把两个相邻的回车符（^p）替换为一个文档中没有的特殊符号，比如四分之一分隔符。用以标记正常的分段。

2：再把所有的单个回车符（^p）替换为空格。

3：把之前替换的文档中没有的特殊符号，比如四分之一分隔符，替换成单个的回车符（^p），还原自然分段。并去除了空行。

4：把可能出现的标点后的多于空格替换，比如逗号空格（, ）替换成单个逗号（,）。句号、问号等都照做。

特殊符号在这里输入：