网站首页 英语词典
These steps , known to microbiologists as Koch's postulates, were established in the 19 th century.
这些微生物学家称之为柯赫氏法则的步骤确立于19世纪.
互联网
国先网英语在线翻译词典收录了4367410条英语词汇在线翻译词条，基本涵盖了全部常用英语词汇的中英文双语翻译及用法，是英语学习的有利工具。