更不用说：用于强调某个事物的重要性或显而易见的事实，通常用于列举事物时，表示某个事物更加突出或重要。
much less
同义词： let alone
且不说(Not to mention)男女比例失衡(Imbalance)，男女(Men and women)各种差距实在(Really)是大。
此句关键是对not to mention（更不用说）的理解。not to mention 在英语句子中常常可以表 示递进的关系，对事物进一步加以说明。
这是让我意料之外的，我没有想到鑫源公司的领导如此重视一个平民车手，也许谈不上(Not to mention)是车手，一个残疾爱好者而已…感谢鑫源的领导…
Wasted time is a drag on American's economic and-private lives, not to mention infuriating.
浪费了的时间拖累了美国人民的经济生活和私人生活，更不必说还令人愤怒了。
Wasted time is a drag on American's economic and private lives, not to mention infuriating.
浪费的时间拖累了美国人民的经济生活和私人生活，更不必说还令人愤怒了。
He has two big houses in this country, not to mention his villa in France.
他在这个国家有两座大房子，更别提他在法国的别墅了。
Often neighbors take several trips together each year, sharing gasoline costs, home-cooked meals - not to mention laughs and memories.
VOA : standard.2010.03.01
Well, sometimes you divide up the land equally, but if that land continues to get smaller and smaller, it will not sustain an additional person, not to mention additional family.
一种做法是,平分耕地,但是如果人口越来越多呢,那平分的田地就不够一人所需,更不必说整个家庭了
古希腊历史简介课程节选 : 耶鲁公开课
not to mention ten and fifteen.
别提十年或者十五年聚会了。
人性课程节选 : 普林斯顿公开课
That is a promise that I make to you,". The president did not specifically mention Afghanistan in his talk to the troops, but he is expected to send thousands more service members to fight there.
VOA : standard.2009.11.13
Not to mention the snow-capped peaks, bell-clad cows and open-air cable cars of Swiss fantasies.
There are going to be footprints all over my shoulders, not to mention yours.
Not to mention, small steps, during a downturn, pave the way to prosperity when circumstances change.
FORBES: Protecting Yourself In A Plunging Economy: The Small Step Solution