字边界 meaning in English

word boundary

A word boundary is the position between a word and a space
字边界是单词和空格之间的位置。
In the word chapter because it appears before a word boundary
，因为它出现在字边界的前面：
A nonword boundary is any other position
非字边界是任何其他位置。
But on a word boundary in the word
中的非字边界处，但出现在单词
Because the characters appear following a word boundary
的开头三个字符，因为这三个字符出现字边界后面：

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