英语词汇at first hand是什么意思，at first hand的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典

英汉汉英翻译词典包含1679246条英汉翻译词条，基本涵盖了全部常用英语单词及常用语的翻译及用法，是英语学习及翻译工作的有利工具。

单词	at first hand
释义	UK
随便看	compact disc compact disc player Compact Disc-Interactive compact disc-read-only memory compact disk compact disk compact disk compact disk read only collection compact double layer compact edema compact extractor compact galaxy compact Hausdorff space compact heat exchanger compact homology manifold compact into compact into compact layer compact mapping compact metric space compact mixture compact opentopology compact operator compact osteoma compact package