在页眉和页脚的情形下，这种空间划分也许恰好可以满足在视觉上分隔页面内容为逻辑组的需要。
In the case of a page header or footer, this division of space might be exactly what's needed to visually break the page content into logical groups.
使用字符串非常笨拙，而且必须为字符串中的每个值保留固定的字符数，或者使用分隔符来划分。
Using a string is unwieldy, and it forces you to reserve a specific number of characters in the string for each value or to use a separator character to delimit each value.
根据指定的分隔符，源字符串被划分为几个部分。
Based on the specified delimiter, the source string is divided into sections.
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