| 1. | It must begin with an alphabetic character or an underscore
必须以字母或下划线( |
| 2. | Is an alphabetic character called the format specifier , and
如果格式字符串不包含某个标准格式说明符，则引发 |
| 3. | It must only contain alphabetic characters , decimal digits , and underscores
必须只包含字母、十进制数字和下划线。 |
| 4. | Shows how and where to use non - numeric and non - alphabetic characters
介绍使用非数字字符和非字母字符的方式和场所。 |
| 5. | Alphabetic character subset
欧字部分集合 |
| 6. | For example , the user enters an alphabetic character when a digit is required
例如，当需要数字时，用户输入了字母字符。 |
| 7. | You can check ranges within pairs of numbers , alphabetic characters , and dates
可以检查数字对、字母对和日期对限定的范围。 |
| 8. | Alphabetic character set
字符字元集 |
| 9. | Alphabetic character set
欧字集合 |
| 10. | In some languages , there are alphabetic characters that represent two separate characters
在某些语言中，有一些表示两种不同字符的字母字符。 |
