英语词汇has been known since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	has been known since
释义	known — 所知 • 表明 known adj — 已知 adj • 已知的 adj since prep — 自 prep • 打 prep since — 因为 adv • 兹因 has-been — 过气 since conj — 既 conj • 既然 conj • 既是 conj
随便看	natural reservoir natural residues natural resilience natural resin natural resistance natural resonant frequency natural resouces natural resource natural resource abundance natural resource base natural resource companies natural resource constraints natural resource consumption natural resource curse natural resource degradation natural resource depletion natural resource deposits natural resource economics natural resource endowment natural resource exploitation natural resource extraction natural resource governance natural resource issues natural resource management natural resource operations

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。

known —