事务管理器要么是一个多线程环境，要么是一个多进程环境。

The transaction manager can either be a multi-threaded or a multi-process environment.

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当前，为了管理CPU性能损耗，处理器生产厂商倾向于采用多核芯片设计，并且软件必须以多线程或者多进程的方式来编写，从而发挥硬件的最大优势。

Now, to manage CPU power dissipation, processor makers favor multi-core chip designs, and software has to be written in a multi-threaded or multi-process manner to take full advantage of the hardware.

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