To work as a translator, you need fluency in at least one foreign language.当翻译需要至少熟练掌握一种外语。
his fluency in French他法语的流利
英汉双解词典包含368430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。