计算机科学技术
小系统作业
A recent report shows that the small organ has a much more important job in the body's defense system than once believed.
VOA : special.2009.08.25
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。