If a value clause is not specified, the initial value of the item is undefined.

如果没有指定value子句，则表示没有定义该项的初始值。

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Parameter MARKER: an application may wish to call the same query multiple times, only changing specific values each time (ex: parameters sent to a stored procedure, or a value in a WHERE clause).

参数标志(PARAMETER MARKER)：应用程序可能希望多次调用同一个查询，每次调用时只改变特定的值(例如，发送给存储过程的参数，或者where子句中的值)。

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The let clause assigns a value or sequence to a variable.

let 子句为一个变量赋一个值或一个序列。

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This agreement generated tens of thousands of dollars of value due to an advantageous chargeback clause.

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Last week, his company submitted a second bid, changing the terms to offer more cash upfront and including a clause that guarantees the value of the deal if Qwest's stock price sinks.

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