For example, the editorof a book should be encoded in a 700 field, with a $e subfield thatspecifies the person is the editor.
比如说，一本书的编者应当标目在700字段，用|e表明这个人是编者。
Making room for a new field usually means reducing the resources of the existing ones, and the existing fields will also often respond by trying to contain the new area as a subfield.
为一个新学科腾出地方就意味着要减少现有学科的资源，而后者通常的反应就是将新的学科划作自己的势力范围。
Cataloguers always ignore field indicator in MAC, and this lead to appear error in subfield or unrealized field function.
机读目录的字段 指示符往往被编目员忽视，从而导致了子字段数据出现错误或字段功能无法实现。
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