类似的，当一个解析器在一个响应数据中得到对一些名字有一系列资源记录，并且想要缓存他时，他应该去检查缓存中是否已经存在相应的记录。
In a similar vein, when a resolver has a set of RRs for some name in a response, and wants to cache the RRs, it should check its cache for already existing RRs.
当一些同类型的资源记录对一个特殊的名字可用时，解析器应该将他们全部缓存或者全部不存。
When several RRs of the same type are available for a particular owner name, the resolver should either cache them all or none at all.
为了把一个名字映射为一个IP地址，应用程序调用一种名叫解析器的库程序，将名字作为参数进行传递。
To map a name onto an IP address, an application program calls a library procedure called the resolver, passing it the name as a parameter.
为了把一个名字映射为一个IP地址，应用程序调用一种名叫解析器的库程序，将名字作为参数进行传递。
To map a name onto an IP address, an application program calls a library procedure called the resolver, passing it the name as a parameter.
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