Many programming languages support the concept of a field index for accessing a particular occurrence of a repeating field.
许多编程语言支持字段索引的概念，字段索引用于访问重复字段的特定实例。
To create a repeating field in an output message, begin by looking at the map's input message to locate a field that repeats the desired number of times.
为了在输出消息中创建重复的字段，首先要查看映射的输入消息，寻找重复所需次数的字段。
The Fan Out Context contains an integer field containing the index of the occurrence of the repeating element along with an element containing the occurrence itself.
扇出上下文包含一个整数字段，其中包含重复元素的occurrence的索引，以及包含 occurrence本身的元素。
The Fan Out Context contains an integer field containing the index of the occurrence of the repeating element along with an element containing the occurrence itself.
扇出上下文包含一个整数字段，其中包含重复元素的occurrence的索引，以及包含 occurrence本身的元素。
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