An operation can be a relational operator, a system - or user-defined function, or an SQL operator, such as GROUP BY, ORDER BY, and so on.

操作可以是一个关系运算符，或者系统或用户定义的函数，也可以是一个sql操作符，例如GROUP BY、ORDER BY等。

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Notification that the order was shipped (the shipping system calls the orderShipped operation)

通知订单已装运（装运系统调用 orderShipped 操作）

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The real estate corporation must implement CRM system in order to carry out the enterprise operation mechanism that focuses on customers and to meet the individual demand of customers.

房地产开发为满足客户个性化需求，必须借助CRM系统，实现一切“以客户为中心”的企业运营机制。

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The next order of operation was to deploy our suite of tools on the compromised system and to begin scoping out the internal network.

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