This type means that the data will be indexed as usual, but it will not be stored along with the index, so it won't be retrievable from a matching result.
这种类型意味着将以通常的方式对数据进行索引，数据不必同索引一起存储，所以不能在匹配的结果中获得该数据。
Attempting to check the data type when matching a pattern or in a value comparison.
当匹配模式或者进行值比较时，需要检查数据类型。
In this case, we entered a single colon delimited line with matching data items to populate the user input parameter of type PasswdEntry.
在本例中，我们输入包含匹配数据项的单个冒号分隔行来填充PasswdEntry类型的输入参数user。
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