中文: abbr. China Aptitude Test for Translators and Interpreters(现已停用); 全国翻译专业资格(水平)考试
n. China Accreditation Test for Translators and Interpreters(自2008年实行)
中文: abbr. California and Texas Telecommunications System 加利福尼亚和得克萨斯电信系统; computer-assisted teaching training system 计算机辅助教学培训系统