In word processing, a program for producing form letters in which a name and address file is merged with the text file containing the letter.
在字（词）处理技术中，用于产生形式化的信件的一种程序，这种信件是把含有姓名和地址的文件与含有信件正文的文件合并而成的。
Twilight merged into total darkness.
暮色四合, 渐而一片漆黑.
The two marching columns moved closer and finally merged.
行进中的两路纵队越走越近，终于合成一路。
