We set the values of their text nodes to the empty string and 0, respectively.
我们将其文本节点的值分别设为空字符串和0。
Numeric fields are given the value 0, and string fields have the empty string value.
数值字段被赋以0值，而字符串字段则赋以空字符串值。
Numeric fields are given the value 0, and string fields have the empty string value.
数值字段被赋以0值，而字符串字段则赋以空字符串值。
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