中文都表达不清楚还要别人翻译？
更不用说大量阅读自己学科以外的东西了。
much less to read a lot outside of his own subject
更不用说 可以用以下英语表达
1)let alone更不用说，还不算; 何况; 别说
[例句]The couple are not communicating, let alone conversing.这对夫妻彼此都没有交流，更不用说聊天了。
she can't boil potatoes, let alone cook a meal。她不会炖土豆，更不用说做顿饭了。
2) Not to mention更不用说;不消说
[例句] Mary decided not to mention her cold. 玛丽决定不提她感冒的事。
3） much less 副词短语,常用于否定句中,意思是“更不用说“
[例句] I am so tired that I cannot walk any more, much less run.
我太累了,都走不动了,更不用说跑了.
