to say nothing ofI have a hard enough time getting out of bed before sunrise, never mind getting to work so early
I have a hard enough time getting out of bed before sunrise, never mind getting to work so early
let alone, much less, still less
not to mention
in 1954
英语同义词词典收录了63618条英语词条，基本涵盖了全部常用同义词或反义词的辨析及翻译，是英语学习的有利工具。