This technique works fine if you have a single database maintenance activity within the logical unit of work (LUW).

如果在逻辑工作单元(LUW)中维护一个数据库活动，那么这一技巧将非常有用。

youdao

An Activity is a logical set of identifiers.

活动是标识符的逻辑集合。

youdao

A service is a logical representation of a repeatable activity that has a specified outcome.

服务是对具有特定产出的可重复活动的逻辑描述。

youdao

This broad definition of the economic activity subject to congressional regulation lacks logical limitation and is unsupported by Commerce Clause jurisprudence.

WSJ: Highlights From the Ruling