| 1. | 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。 |
| 2. | In the word chapter because it appears before a word boundary
，因为它出现在字边界的前面： |
| 3. | A nonword boundary is any other position
非字边界是任何其他位置。 |
| 4. | But on a word boundary in the word
中的非字边界处，但出现在单词 |
| 5. | 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： |
| 6. | The word boundary metacharacters ensure that only whole words are detected
字边界元字符确保只检测整个单词。 |
| 7. | Matches a word boundary , that is , the position between a word and a space
匹配一个字边界，即字与空格间的位置。 |
| 8. | Matches a nonword boundary
非字边界匹配。 |
| 9. | Matching word boundaries is a little different but adds a very important capability to regular expressions
匹配字边界稍有不同，但向正则表达式添加了很重要的能力。 |
| 10. | For the - b nonword boundary operator , position is not important because the match is not relative to the beginning or end of a word
中的字边界处。对于 b非字边界运算符，位置并不重要，因为匹配不关心究竟是单词的开头还是结尾。 |
