消息的XML表示是纯文本文件，因此它通常比其他格式(如分隔符、二进制或定制格式)的等价表示要大得多。
The XML representation of a message is a plain text file, so it is generally much larger than an equivalent representation in another format (such as delimited, binary, or custom formats).
每个概念的实际标识符，可能被词汇表管理应用程序所隐藏，是 URI（查看 图 2 的纯文本版本。）
The actual identifiers for each concept, which might be hidden under the covers by a vocabulary management application, are URIs. (View a text-only version of Figure 2.)
首先可以用位运算符替代纯数学操作。
The first is to use bitwise operations instead of pure mathematical operations.
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