For example, if the database server machine is a remote machine, you will need to set the PGHOST environment variable to the name of the database server machine.

比如，如果数据库服务器机器是一个远程的机器，那你就需要把PGHOST环境变量设置为数据库服务器所在机器的名字。

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Complex business logic simulation with runtime variable state machine.

包含运行时变量状态机的复杂业务逻辑模拟。

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You need to store the order information in a variable so that you can pass it to the services that are called as the state machine processes an order.

您需要将订单信息存储在变量中，以便能将其发送到状态机处理订单时调用的服务。

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Upgrading my Trinity-powered HTPC is also high on my to-do list, and will give me a chance to do some benchmark comparisons, since switching the OS will be the only variable on that machine.

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Like a loose slot machine, the infinite scroll gives users fast access to variable rewards.

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Calculating the addition of the number 2 to a variable, for example, can generate 27 instructions in machine code, many of them repetitive.

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