英语词汇unprecedented efficiency怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	unprecedented efficiency
释义	unprecedented — 未有 • 前所未有 • 空前 • 前所未有的 • 破天荒 • 旷古未闻 • 亘古未有 • 前所未闻 • 旷古未有 efficiency n — 效率 n • 高效 n • 效益 n • 能效 n • 效能 n • 效率 n unprecedented [idiom.]— 前不见古人，后不见来者 unprecedented adj — 未见 adj efficient adj — 有效 adj • 高效 adj • 效率 adj • 高效率 adj • 有效率 adj • 得力 adj • 麻利 adj • 干净利落 adj
随便看	in Jan 2012 in January alone in January i will in January i will in January last year in January last year in January next year in January next year in January of this year in January this year in January this year in January through in janurary in Japan in Japan and the rest of Asia in Japan as well in Japan as well in Japanese in Japanese yen in jar in jazz style inject injectable antibiotics injectable bone substitute injectable device

英汉双解词典包含2273206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。

unprecedented —