对于姓名、地址和产品描述等文本数据，查看可变的数据格式是识别包含多个域的字段的关键。

For text data such as name, address, and product descriptions, a review of the varying data formats is critical to identify fields containing multiple domains.

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文本或blob等可变大小字段也是如此，其中表大小的增长可以远超过需求。

This is also true with variable size fields, such as text or blob, where the table size can grow much larger than needed.

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PublicServiceReminder：让一个对象的所有字段都为final并不一定使得这个对象不可变 —— 所有的字段还必须是原语类型或是对不可变对象的引用。

Public Service Reminder: Making all fields of an object final does not necessarily make the object immutable -- all fields must also be primitive types or references to immutable objects.

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如果你希望有可变的字段，那么使用var关键字。

If you want mutable fields, then use the keyword var.

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使用一系列固定格式的扩展头部取代了IPV 4中可变长度的选项字段。

Using a series of fixed format extension head replaced IPV4 variable-length options in the fields.

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指明了如何解析可变长度字段，有效值被描述在表1。

Indicates how to interpret the variable length type field. Valid values are described in described in Table 1.

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字符数量可变的一种字段，它必须包含一个数据域以指示字段的终止及长度。

A field in which the number of the characters can be changed. A variable-length field must contain a data area to indicate its end and length.

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字符数量可变的一种字段，它必须包含一个数据域以指示字段的终止及长度。

A field in which the number of the characters can be changed. A variable-length field must contain a data area to indicate its end and length.

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