The hold buffer may replace the pattern space, be added to the pattern space, or be exchanged with the pattern space.

保持缓存可以取代模式空间、被添加到模式空间，或者与模式空间进行互换。

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Sed has a limited set of commands, but these combined with regular expression syntax and the hold buffer make for some amazing capabilities.

Sed提供了一组有限的命令，但是这些命令结合了正则表达式语法和保持缓存，因而实现了某些非常令人吃惊的功能。

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A hold buffer provides temporary storage for text.

保持缓存为文本提供了临时存储。

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Banks must hold a higher buffer of capital to a certain level in order to keep to European rules.

BBC: Bank of Ireland: Andrew Tyrie writes to FSA over rate rise

New rules on bankers' bonuses and the amount of capital that banks must hold as a buffer have been approved by the European Parliament by a big majority.

BBC: EU tightens up bank lending rules and bonuses

After all, through generous political giving and effective lobbying, Fannie and Freddie have managed to fend off attempts to force them to boost the capital they hold, their buffer against losses.

NPR: Housing Bill Calls For New Fannie-Freddie Regulator