有关英文专业词典给parser的解释：
1、
A routine that analyzes a continuous flow of text-based input and breaks it into its constituent parts.
2、
An algorithm or program to determine the syntactic structure of a sentence or string of symbols in some language. A parser normally takes as input a sequence of tokens output by a lexical analyser. It may produce some kind of abstract syntax tree as output. One of the best known parser generators is yacc.
parser是一种程序或者算法
有关英文专业词典给resolver的解释：
1、
The client part of a DNS name service. The resolver queries the name server to turn a name into an IP address.
2、
The TCP/IP protocol library software that formats requests to be sent to the Domain Name Server for hostname to IP address conversion.
resolver相对专用于DNS方面。
尽管叫法可能一样，但含义完全不同。