This means that every row in the point table must have a key value (consisting, in this case, of two column values) that must also exist in the source table.
这意味着点表中每一行的键值（在这个示例中，由两个列值组成）必须也在源表中存在。
Table 4 shows the key values measured for the two configurations.
表4展示了两个配置的关键度量值。
A dictionary in Objective-C is an object that holds two sets of information, a unique key and associated values, and enables you to use the key to retrieve items.
Objective - c中的字典是一个具有两组信息(惟一的密钥和相关的值)的对象，且使您能够使用该密钥来检索条目。
In the event output, the EVENT_TYPE key has two values.
在事件输出结果中，EVENT _ type键有两个值。
An inner join is essentially the intersection of two tables, where the tables are matched by comparing the values of a key column, such as itemNumber.
内连接实际上是两个表的交集，它通过比较关键列(比如itemnumber)的值来匹配表。
Two key functions for operating on lists (and other sequences of values) are first (which returns the first item) and rest (which returns a list of the rest of the items).
对列表（以及其他值序列）进行操作的两个关键函数是first（返回第一项）和rest（返回其余项的清单）。
Anyone receiving the message can use the same hash algorithm on that message, then decrypt the supplied encrypted digest using your public key and compare the two values.
任何接收此消息的人都可以对该消息使用相同的散列算法，然后使用您的公开密匙解密附带的已加密摘要，并比较两者的值。
The match criteria is a set of key/value pairs that is used to define the scope of a policy. Two specific key values of interest are
匹配标准由一组key值 对组成，用来定义策略的作用范围。
That is, for any two entities within an entity set, the values for all of the properties that constitute a key cannot be the same.
也就是说，对于实体集中的任意两个实体，构成一个键的所有属性的值不能全部相同。
That is, for any two entities within an entity set, the values for all of the properties that constitute a key cannot be the same.
也就是说，对于实体集中的任意两个实体，构成一个键的所有属性的值不能全部相同。
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