Going back to Listing 14, once we have the list of entries, we then use some simple string concatenation to create an XML document.

返回到清单14，在拥有条目列表之后，使用某个简单的字符串连接来创建XML文档。

youdao

Concatenation is the process to sequentially join multiple pieces of data, usually literal strings with non-string-literal data (most commonly, variables or other literals).

连接操作是一个顺序的连接多个数据片段的过程，通常是连接字符串和非字符串数据(绝大多数是变量或其它字符)。

youdao

The array concat function takes an array of strings as an input and returns a concatenation of the strings into a single string output.

array concat函数获取一个字符串数组作为输入并在字符串输出中返回联接后的这些字符串。

youdao

All right? And if you want to do other things, whoops, sorry-- and add them together, we will get out, again, a concatenation of that string. And these will, we'll let you work through the variations, but these are the simple expressions we can use.

对不对？如果你想要进行一些别的操作，哦，对不起-是加到一块，然后结果值也是，两个字符串的链接，这些会，我们会让大家慢慢学习变量，但是这些是我们能用的最简单的表达式。

麻省理工公开课 - 计算机科学及编程导论课程节选