英语词汇echo symptom怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	echo symptom
释义	echo symptom 简明释义回声症专业释义 1 心理学回声症 2 教育学回声症
随便看	relational database schema relational data base schema relational database server relational database structure relational database support relational database system relational database theory relational data file relational data language relational data model relational data structure relational DBMS relational definition relational degree relational direct access method relational distance relational document relational expression relational fertility relational file relation algebra relational grammar relational graph relational heirarchical structure relational hierarchy

英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。