网站首页 汉语 德语 英语
That does not produce effects; that is not efficient or effective; inefficient.
Mid 19th century; earliest use found in New York Journal Pharmacy. From non- + efficient.
雅致网英汉双解词典包含236457条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。