我想包括包含在应用程序始建时的系统状态附加字符串数据。
I want to include additional string data that contains the state of the system at the time the application was built.
在处理字符串值时，向元素添加数据和将元素附加为行的子元素是非常直观的，如清单12所示。
Adding data to the element and appending the element as a child of the row is straightforward when working with string values, as in Listing 12.
最后，字符串类型是引用类型，因此每个字符串实例都引用一个附加的内存块，以存放实际的字符串数据。
Finally, the string type is a reference type, so every string instance refers to an additional block of memory to hold the actual string data.
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