“份数”字符域包含非数字的字符。

The 'Copies' field contains non-numeric characters.

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请注意，上面的正则表达式如何只捕获“connection from”和一个非数字的字符串后面的数字和点。

Note how the regular expression above captures only digits and dots, after "connection from" and a string of non-digits.

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对于带前置负号(负前缀)的模式，截断发生在非数字字符的点(包括了内嵌的负号)。

For patterns with a leading minus sign (negative prefix), truncation occurs at the point of a nondigit character, including embedded minus signs.

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