Such spycams are, of course, effective only as long as they remain unrecognized, and appearing in a national store chain and catalog may defeat some of the clock's clandestine advantage.
ENGADGET: Switched On: Creep spy for the cheap guy
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。